diff --git a/core b/core
index 83756edd2c..220429d923 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 83756edd2c7f0fe373a2dc5ce90f0c5c5c2c2f8d
+Subproject commit 220429d9234d1b5d036cd9bf5ad7ec26e1cf6b5a
diff --git a/eng/sdk/patches/0001-revert-impl-in-loadtesting.patch b/eng/sdk/patches/0001-revert-impl-in-loadtesting.patch
deleted file mode 100644
index aeface5fb8..0000000000
--- a/eng/sdk/patches/0001-revert-impl-in-loadtesting.patch
+++ /dev/null
@@ -1,223 +0,0 @@
-From c8fd94a2e03f6402b90557f58768384a460f61f3 Mon Sep 17 00:00:00 2001
-From: Weidong Xu <weidxu@microsoft.com>
-Date: Thu, 7 Aug 2025 13:31:11 +0800
-Subject: [PATCH] revert impl in loadtesting
-
----
- .../LoadTestAdministrationClientImpl.java     | 34 ++++++++++++-------
- .../implementation/LoadTestRunClientImpl.java | 20 ++++++-----
- 2 files changed, 33 insertions(+), 21 deletions(-)
-
-diff --git a/sdk/loadtesting/azure-developer-loadtesting/src/main/java/com/azure/developer/loadtesting/implementation/LoadTestAdministrationClientImpl.java b/sdk/loadtesting/azure-developer-loadtesting/src/main/java/com/azure/developer/loadtesting/implementation/LoadTestAdministrationClientImpl.java
-index 297869a5e79..255296fc444 100644
---- a/sdk/loadtesting/azure-developer-loadtesting/src/main/java/com/azure/developer/loadtesting/implementation/LoadTestAdministrationClientImpl.java
-+++ b/sdk/loadtesting/azure-developer-loadtesting/src/main/java/com/azure/developer/loadtesting/implementation/LoadTestAdministrationClientImpl.java
-@@ -378,7 +378,8 @@ public final class LoadTestAdministrationClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Mono<Response<Void>> deleteTestFile(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testId") String testId,
--            @PathParam("fileName") String fileName, RequestOptions requestOptions, Context context);
-+            @PathParam("fileName") String fileName, @HeaderParam("Accept") String accept, RequestOptions requestOptions,
-+            Context context);
- 
-         @Delete("/tests/{testId}/files/{fileName}")
-         @ExpectedResponses({ 204 })
-@@ -388,7 +389,8 @@ public final class LoadTestAdministrationClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Response<Void> deleteTestFileSync(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testId") String testId,
--            @PathParam("fileName") String fileName, RequestOptions requestOptions, Context context);
-+            @PathParam("fileName") String fileName, @HeaderParam("Accept") String accept, RequestOptions requestOptions,
-+            Context context);
- 
-         @Delete("/tests/{testId}")
-         @ExpectedResponses({ 204 })
-@@ -398,7 +400,7 @@ public final class LoadTestAdministrationClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Mono<Response<Void>> deleteTest(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testId") String testId,
--            RequestOptions requestOptions, Context context);
-+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
- 
-         @Delete("/tests/{testId}")
-         @ExpectedResponses({ 204 })
-@@ -408,7 +410,7 @@ public final class LoadTestAdministrationClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Response<Void> deleteTestSync(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testId") String testId,
--            RequestOptions requestOptions, Context context);
-+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
- 
-         @Patch("/test-profiles/{testProfileId}")
-         @ExpectedResponses({ 200, 201 })
-@@ -440,7 +442,7 @@ public final class LoadTestAdministrationClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Mono<Response<Void>> deleteTestProfile(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testProfileId") String testProfileId,
--            RequestOptions requestOptions, Context context);
-+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
- 
-         @Delete("/test-profiles/{testProfileId}")
-         @ExpectedResponses({ 204 })
-@@ -450,7 +452,7 @@ public final class LoadTestAdministrationClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Response<Void> deleteTestProfileSync(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testProfileId") String testProfileId,
--            RequestOptions requestOptions, Context context);
-+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
- 
-         @Get("/test-profiles/{testProfileId}")
-         @ExpectedResponses({ 200 })
-@@ -2730,8 +2732,9 @@ public final class LoadTestAdministrationClientImpl {
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Mono<Response<Void>> deleteTestFileWithResponseAsync(String testId, String fileName,
-         RequestOptions requestOptions) {
-+        final String accept = "application/json";
-         return FluxUtil.withContext(context -> service.deleteTestFile(this.getEndpoint(),
--            this.getServiceVersion().getVersion(), testId, fileName, requestOptions, context));
-+            this.getServiceVersion().getVersion(), testId, fileName, accept, requestOptions, context));
-     }
- 
-     /**
-@@ -2749,8 +2752,9 @@ public final class LoadTestAdministrationClientImpl {
-      */
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Response<Void> deleteTestFileWithResponse(String testId, String fileName, RequestOptions requestOptions) {
-+        final String accept = "application/json";
-         return service.deleteTestFileSync(this.getEndpoint(), this.getServiceVersion().getVersion(), testId, fileName,
--            requestOptions, Context.NONE);
-+            accept, requestOptions, Context.NONE);
-     }
- 
-     /**
-@@ -2767,8 +2771,9 @@ public final class LoadTestAdministrationClientImpl {
-      */
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Mono<Response<Void>> deleteTestWithResponseAsync(String testId, RequestOptions requestOptions) {
-+        final String accept = "application/json";
-         return FluxUtil.withContext(context -> service.deleteTest(this.getEndpoint(),
--            this.getServiceVersion().getVersion(), testId, requestOptions, context));
-+            this.getServiceVersion().getVersion(), testId, accept, requestOptions, context));
-     }
- 
-     /**
-@@ -2785,8 +2790,9 @@ public final class LoadTestAdministrationClientImpl {
-      */
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Response<Void> deleteTestWithResponse(String testId, RequestOptions requestOptions) {
--        return service.deleteTestSync(this.getEndpoint(), this.getServiceVersion().getVersion(), testId, requestOptions,
--            Context.NONE);
-+        final String accept = "application/json";
-+        return service.deleteTestSync(this.getEndpoint(), this.getServiceVersion().getVersion(), testId, accept,
-+            requestOptions, Context.NONE);
-     }
- 
-     /**
-@@ -2936,8 +2942,9 @@ public final class LoadTestAdministrationClientImpl {
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Mono<Response<Void>> deleteTestProfileWithResponseAsync(String testProfileId,
-         RequestOptions requestOptions) {
-+        final String accept = "application/json";
-         return FluxUtil.withContext(context -> service.deleteTestProfile(this.getEndpoint(),
--            this.getServiceVersion().getVersion(), testProfileId, requestOptions, context));
-+            this.getServiceVersion().getVersion(), testProfileId, accept, requestOptions, context));
-     }
- 
-     /**
-@@ -2956,8 +2963,9 @@ public final class LoadTestAdministrationClientImpl {
-      */
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Response<Void> deleteTestProfileWithResponse(String testProfileId, RequestOptions requestOptions) {
-+        final String accept = "application/json";
-         return service.deleteTestProfileSync(this.getEndpoint(), this.getServiceVersion().getVersion(), testProfileId,
--            requestOptions, Context.NONE);
-+            accept, requestOptions, Context.NONE);
-     }
- 
-     /**
-diff --git a/sdk/loadtesting/azure-developer-loadtesting/src/main/java/com/azure/developer/loadtesting/implementation/LoadTestRunClientImpl.java b/sdk/loadtesting/azure-developer-loadtesting/src/main/java/com/azure/developer/loadtesting/implementation/LoadTestRunClientImpl.java
-index 795e6ea68ab..1b8baee686e 100644
---- a/sdk/loadtesting/azure-developer-loadtesting/src/main/java/com/azure/developer/loadtesting/implementation/LoadTestRunClientImpl.java
-+++ b/sdk/loadtesting/azure-developer-loadtesting/src/main/java/com/azure/developer/loadtesting/implementation/LoadTestRunClientImpl.java
-@@ -231,7 +231,7 @@ public final class LoadTestRunClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Mono<Response<Void>> deleteTestRun(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testRunId") String testRunId,
--            RequestOptions requestOptions, Context context);
-+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
- 
-         @Delete("/test-runs/{testRunId}")
-         @ExpectedResponses({ 204 })
-@@ -241,7 +241,7 @@ public final class LoadTestRunClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Response<Void> deleteTestRunSync(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testRunId") String testRunId,
--            RequestOptions requestOptions, Context context);
-+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
- 
-         @Get("/test-runs/{testRunId}/app-components")
-         @ExpectedResponses({ 200 })
-@@ -485,7 +485,7 @@ public final class LoadTestRunClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Mono<Response<Void>> deleteTestProfileRun(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testProfileRunId") String testProfileRunId,
--            RequestOptions requestOptions, Context context);
-+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
- 
-         @Delete("/test-profile-runs/{testProfileRunId}")
-         @ExpectedResponses({ 204 })
-@@ -495,7 +495,7 @@ public final class LoadTestRunClientImpl {
-         @UnexpectedResponseExceptionType(HttpResponseException.class)
-         Response<Void> deleteTestProfileRunSync(@HostParam("endpoint") String endpoint,
-             @QueryParam("api-version") String apiVersion, @PathParam("testProfileRunId") String testProfileRunId,
--            RequestOptions requestOptions, Context context);
-+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
- 
-         @Get("/test-profile-runs/{testProfileRunId}")
-         @ExpectedResponses({ 200 })
-@@ -1639,8 +1639,9 @@ public final class LoadTestRunClientImpl {
-      */
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Mono<Response<Void>> deleteTestRunWithResponseAsync(String testRunId, RequestOptions requestOptions) {
-+        final String accept = "application/json";
-         return FluxUtil.withContext(context -> service.deleteTestRun(this.getEndpoint(),
--            this.getServiceVersion().getVersion(), testRunId, requestOptions, context));
-+            this.getServiceVersion().getVersion(), testRunId, accept, requestOptions, context));
-     }
- 
-     /**
-@@ -1659,7 +1660,8 @@ public final class LoadTestRunClientImpl {
-      */
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Response<Void> deleteTestRunWithResponse(String testRunId, RequestOptions requestOptions) {
--        return service.deleteTestRunSync(this.getEndpoint(), this.getServiceVersion().getVersion(), testRunId,
-+        final String accept = "application/json";
-+        return service.deleteTestRunSync(this.getEndpoint(), this.getServiceVersion().getVersion(), testRunId, accept,
-             requestOptions, Context.NONE);
-     }
- 
-@@ -4380,8 +4382,9 @@ public final class LoadTestRunClientImpl {
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Mono<Response<Void>> deleteTestProfileRunWithResponseAsync(String testProfileRunId,
-         RequestOptions requestOptions) {
-+        final String accept = "application/json";
-         return FluxUtil.withContext(context -> service.deleteTestProfileRun(this.getEndpoint(),
--            this.getServiceVersion().getVersion(), testProfileRunId, requestOptions, context));
-+            this.getServiceVersion().getVersion(), testProfileRunId, accept, requestOptions, context));
-     }
- 
-     /**
-@@ -4400,8 +4403,9 @@ public final class LoadTestRunClientImpl {
-      */
-     @ServiceMethod(returns = ReturnType.SINGLE)
-     public Response<Void> deleteTestProfileRunWithResponse(String testProfileRunId, RequestOptions requestOptions) {
-+        final String accept = "application/json";
-         return service.deleteTestProfileRunSync(this.getEndpoint(), this.getServiceVersion().getVersion(),
--            testProfileRunId, requestOptions, Context.NONE);
-+            testProfileRunId, accept, requestOptions, Context.NONE);
-     }
- 
-     /**
--- 
-2.50.1.windows.1
-
diff --git a/typespec-extension/changelog.md b/typespec-extension/changelog.md
index 38d8d35c02..706d344352 100644
--- a/typespec-extension/changelog.md
+++ b/typespec-extension/changelog.md
@@ -1,5 +1,11 @@
 # Release History
 
+## 0.43.0 (2026-03-12)
+
+Compatible with compiler 1.10.0.
+
+- Updated package dependencies to the latest versions.
+
 ## 0.42.0 (2026-03-09)
 
 Compatible with compiler 1.9.0.
diff --git a/typespec-extension/package-lock.json b/typespec-extension/package-lock.json
index afdd409b5a..182ac67d65 100644
--- a/typespec-extension/package-lock.json
+++ b/typespec-extension/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@azure-tools/typespec-java",
-  "version": "0.42.0",
+  "version": "0.43.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@azure-tools/typespec-java",
-      "version": "0.42.0",
+      "version": "0.43.0",
       "license": "MIT",
       "dependencies": {
         "@autorest/codemodel": "~4.20.1",
@@ -15,29 +15,29 @@
       },
       "devDependencies": {
         "@azure-tools/openai-typespec": "1.11.0",
-        "@azure-tools/typespec-autorest": "0.65.0",
-        "@azure-tools/typespec-azure-core": "0.65.0",
-        "@azure-tools/typespec-azure-resource-manager": "0.65.0",
-        "@azure-tools/typespec-azure-rulesets": "0.65.0",
-        "@azure-tools/typespec-client-generator-core": "0.65.4",
+        "@azure-tools/typespec-autorest": "0.66.0",
+        "@azure-tools/typespec-azure-core": "0.66.0",
+        "@azure-tools/typespec-azure-resource-manager": "0.66.0",
+        "@azure-tools/typespec-azure-rulesets": "0.65.1",
+        "@azure-tools/typespec-client-generator-core": "0.66.1",
         "@azure-tools/typespec-liftr-base": "0.12.0",
-        "@microsoft/api-extractor": "^7.57.6",
+        "@microsoft/api-extractor": "^7.57.7",
         "@types/js-yaml": "~4.0.9",
         "@types/lodash": "~4.17.24",
-        "@types/node": "~25.3.5",
-        "@typescript-eslint/eslint-plugin": "~8.56.1",
-        "@typescript-eslint/parser": "~8.56.1",
-        "@typespec/compiler": "1.9.0",
-        "@typespec/events": "0.79.0",
-        "@typespec/http": "1.9.1",
-        "@typespec/openapi": "1.9.0",
-        "@typespec/openapi3": "1.9.0",
-        "@typespec/rest": "0.79.0",
-        "@typespec/sse": "0.79.0",
-        "@typespec/streams": "0.79.0",
-        "@typespec/tspd": "0.74.0",
-        "@typespec/versioning": "0.79.0",
-        "@typespec/xml": "0.79.0",
+        "@types/node": "~25.4.0",
+        "@typescript-eslint/eslint-plugin": "~8.57.0",
+        "@typescript-eslint/parser": "~8.57.0",
+        "@typespec/compiler": "1.10.0",
+        "@typespec/events": "0.80.0",
+        "@typespec/http": "1.10.0",
+        "@typespec/openapi": "1.10.0",
+        "@typespec/openapi3": "1.10.0",
+        "@typespec/rest": "0.80.0",
+        "@typespec/sse": "0.80.0",
+        "@typespec/streams": "0.80.0",
+        "@typespec/tspd": "0.74.1",
+        "@typespec/versioning": "0.80.0",
+        "@typespec/xml": "0.80.0",
         "@vitest/coverage-v8": "^4.0.18",
         "@vitest/ui": "^4.0.18",
         "c8": "~11.0.0",
@@ -48,7 +48,7 @@
         "prettier": "~3.8.1",
         "rimraf": "~6.1.3",
         "typescript": "~5.9.3",
-        "typescript-eslint": "^8.56.1",
+        "typescript-eslint": "^8.57.0",
         "vitest": "^4.0.18"
       },
       "engines": {
@@ -56,19 +56,19 @@
       },
       "peerDependencies": {
         "@azure-tools/openai-typespec": "^1.11.0",
-        "@azure-tools/typespec-autorest": ">=0.65.0 <1.0.0",
-        "@azure-tools/typespec-azure-core": ">=0.65.0 <1.0.0",
-        "@azure-tools/typespec-azure-resource-manager": ">=0.65.0 <1.0.0",
-        "@azure-tools/typespec-azure-rulesets": ">=0.65.0 <1.0.0",
-        "@azure-tools/typespec-client-generator-core": ">=0.65.4 <1.0.0",
+        "@azure-tools/typespec-autorest": ">=0.66.0 <1.0.0",
+        "@azure-tools/typespec-azure-core": ">=0.66.0 <1.0.0",
+        "@azure-tools/typespec-azure-resource-manager": ">=0.66.0 <1.0.0",
+        "@azure-tools/typespec-azure-rulesets": ">=0.65.1 <1.0.0",
+        "@azure-tools/typespec-client-generator-core": ">=0.66.1 <1.0.0",
         "@azure-tools/typespec-liftr-base": ">=0.12.0 <1.0.0",
-        "@typespec/compiler": "^1.9.0",
-        "@typespec/http": "^1.9.1",
-        "@typespec/openapi": "^1.9.0",
-        "@typespec/openapi3": "^1.9.0",
-        "@typespec/rest": ">=0.79.0 <1.0.0",
-        "@typespec/versioning": ">=0.79.0 <1.0.0",
-        "@typespec/xml": ">=0.79.0 <1.0.0"
+        "@typespec/compiler": "^1.10.0",
+        "@typespec/http": "^1.10.0",
+        "@typespec/openapi": "^1.10.0",
+        "@typespec/openapi3": "^1.10.0",
+        "@typespec/rest": ">=0.80.0 <1.0.0",
+        "@typespec/versioning": ">=0.80.0 <1.0.0",
+        "@typespec/xml": ">=0.80.0 <1.0.0"
       }
     },
     "node_modules/@alloy-js/core": {
@@ -169,24 +169,24 @@
       }
     },
     "node_modules/@azure-tools/typespec-autorest": {
-      "version": "0.65.0",
-      "resolved": "https://registry.npmjs.org/@azure-tools/typespec-autorest/-/typespec-autorest-0.65.0.tgz",
-      "integrity": "sha512-R8pZt7rYdA2Hr3nck93OGapkQZe3MSzoYq4PgRtsGDHcvA5Qp7RBQMF/tP5DEcFWDDm+unoQeDpbD02POb/LTA==",
+      "version": "0.66.0",
+      "resolved": "https://registry.npmjs.org/@azure-tools/typespec-autorest/-/typespec-autorest-0.66.0.tgz",
+      "integrity": "sha512-sznnlQ2Cyxny7bXSl+PzGu+qQf/rrSIvf2qR7G/bqWbK6MNykXwiDk9uR5q93Y8spA9vv4jk38Il4rSXqmAzLQ==",
       "dev": true,
       "license": "MIT",
       "engines": {
         "node": ">=20.0.0"
       },
       "peerDependencies": {
-        "@azure-tools/typespec-azure-core": "^0.65.0",
-        "@azure-tools/typespec-azure-resource-manager": "^0.65.0",
-        "@azure-tools/typespec-client-generator-core": "^0.65.0",
-        "@typespec/compiler": "^1.9.0",
-        "@typespec/http": "^1.9.0",
-        "@typespec/openapi": "^1.9.0",
-        "@typespec/rest": "^0.79.0",
-        "@typespec/versioning": "^0.79.0",
-        "@typespec/xml": "^0.79.0"
+        "@azure-tools/typespec-azure-core": "^0.66.0",
+        "@azure-tools/typespec-azure-resource-manager": "^0.66.0",
+        "@azure-tools/typespec-client-generator-core": "^0.66.0",
+        "@typespec/compiler": "^1.10.0",
+        "@typespec/http": "^1.10.0",
+        "@typespec/openapi": "^1.10.0",
+        "@typespec/rest": "^0.80.0",
+        "@typespec/versioning": "^0.80.0",
+        "@typespec/xml": "^0.80.0"
       },
       "peerDependenciesMeta": {
         "@typespec/xml": {
@@ -195,24 +195,24 @@
       }
     },
     "node_modules/@azure-tools/typespec-azure-core": {
-      "version": "0.65.0",
-      "resolved": "https://registry.npmjs.org/@azure-tools/typespec-azure-core/-/typespec-azure-core-0.65.0.tgz",
-      "integrity": "sha512-dYgHtt0CY0Q9AimdIsMV41jHKLmAT4r++TLwyxAHRbxdiRG+Sll1UKJzOIIoq45Bq64wCfEltu5OOnyPA01/sQ==",
+      "version": "0.66.0",
+      "resolved": "https://registry.npmjs.org/@azure-tools/typespec-azure-core/-/typespec-azure-core-0.66.0.tgz",
+      "integrity": "sha512-OBKxRN7AucK3snh+GtLKSDdcZTz08IgcSZlIO3c4KSlmcR5twT1NMyqf1+V8SAhyOdZimndb+ikzrkkgab+GpA==",
       "dev": true,
       "license": "MIT",
       "engines": {
         "node": ">=20.0.0"
       },
       "peerDependencies": {
-        "@typespec/compiler": "^1.9.0",
-        "@typespec/http": "^1.9.0",
-        "@typespec/rest": "^0.79.0"
+        "@typespec/compiler": "^1.10.0",
+        "@typespec/http": "^1.10.0",
+        "@typespec/rest": "^0.80.0"
       }
     },
     "node_modules/@azure-tools/typespec-azure-resource-manager": {
-      "version": "0.65.0",
-      "resolved": "https://registry.npmjs.org/@azure-tools/typespec-azure-resource-manager/-/typespec-azure-resource-manager-0.65.0.tgz",
-      "integrity": "sha512-3rvyGDIYSqraZ7jHfq5Bfet8u3ZeERWJWhwWMNvbShnrS/vVR3iuu/1z2M0p5mTRFuwUaSMlL/dbtBp1YqgGAg==",
+      "version": "0.66.0",
+      "resolved": "https://registry.npmjs.org/@azure-tools/typespec-azure-resource-manager/-/typespec-azure-resource-manager-0.66.0.tgz",
+      "integrity": "sha512-UbgYUaYTt7prsv+RYxd2kiOWjeEeoH56QOqgXnSOFhYzq/h9fyDaQAm6+CY7cklziED+MYy3uMQd1BG9mNwlfQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -223,34 +223,34 @@
         "node": ">=20.0.0"
       },
       "peerDependencies": {
-        "@azure-tools/typespec-azure-core": "^0.65.0",
-        "@typespec/compiler": "^1.9.0",
-        "@typespec/http": "^1.9.0",
-        "@typespec/openapi": "^1.9.0",
-        "@typespec/rest": "^0.79.0",
-        "@typespec/versioning": "^0.79.0"
+        "@azure-tools/typespec-azure-core": "^0.66.0",
+        "@typespec/compiler": "^1.10.0",
+        "@typespec/http": "^1.10.0",
+        "@typespec/openapi": "^1.10.0",
+        "@typespec/rest": "^0.80.0",
+        "@typespec/versioning": "^0.80.0"
       }
     },
     "node_modules/@azure-tools/typespec-azure-rulesets": {
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       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
diff --git a/typespec-extension/package.json b/typespec-extension/package.json
index 505d66a9dd..5836345739 100644
--- a/typespec-extension/package.json
+++ b/typespec-extension/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@azure-tools/typespec-java",
-  "version": "0.42.0",
+  "version": "0.43.0",
   "description": "TypeSpec library for emitting Java client from the TypeSpec REST protocol binding",
   "keywords": [
     "TypeSpec"
@@ -48,19 +48,19 @@
   ],
   "peerDependencies": {
     "@azure-tools/openai-typespec": "^1.11.0",
-    "@azure-tools/typespec-autorest": ">=0.65.0 <1.0.0",
-    "@azure-tools/typespec-azure-core": ">=0.65.0 <1.0.0",
-    "@azure-tools/typespec-azure-resource-manager": ">=0.65.0 <1.0.0",
-    "@azure-tools/typespec-azure-rulesets": ">=0.65.0 <1.0.0",
-    "@azure-tools/typespec-client-generator-core": ">=0.65.4 <1.0.0",
+    "@azure-tools/typespec-autorest": ">=0.66.0 <1.0.0",
+    "@azure-tools/typespec-azure-core": ">=0.66.0 <1.0.0",
+    "@azure-tools/typespec-azure-resource-manager": ">=0.66.0 <1.0.0",
+    "@azure-tools/typespec-azure-rulesets": ">=0.65.1 <1.0.0",
+    "@azure-tools/typespec-client-generator-core": ">=0.66.1 <1.0.0",
     "@azure-tools/typespec-liftr-base": ">=0.12.0 <1.0.0",
-    "@typespec/compiler": "^1.9.0",
-    "@typespec/http": "^1.9.1",
-    "@typespec/openapi": "^1.9.0",
-    "@typespec/openapi3": "^1.9.0",
-    "@typespec/rest": ">=0.79.0 <1.0.0",
-    "@typespec/versioning": ">=0.79.0 <1.0.0",
-    "@typespec/xml": ">=0.79.0 <1.0.0"
+    "@typespec/compiler": "^1.10.0",
+    "@typespec/http": "^1.10.0",
+    "@typespec/openapi": "^1.10.0",
+    "@typespec/openapi3": "^1.10.0",
+    "@typespec/rest": ">=0.80.0 <1.0.0",
+    "@typespec/versioning": ">=0.80.0 <1.0.0",
+    "@typespec/xml": ">=0.80.0 <1.0.0"
   },
   "dependencies": {
     "@autorest/codemodel": "~4.20.1",
@@ -69,29 +69,29 @@
   },
   "devDependencies": {
     "@azure-tools/openai-typespec": "1.11.0",
-    "@azure-tools/typespec-autorest": "0.65.0",
-    "@azure-tools/typespec-azure-core": "0.65.0",
-    "@azure-tools/typespec-azure-resource-manager": "0.65.0",
-    "@azure-tools/typespec-azure-rulesets": "0.65.0",
-    "@azure-tools/typespec-client-generator-core": "0.65.4",
+    "@azure-tools/typespec-autorest": "0.66.0",
+    "@azure-tools/typespec-azure-core": "0.66.0",
+    "@azure-tools/typespec-azure-resource-manager": "0.66.0",
+    "@azure-tools/typespec-azure-rulesets": "0.65.1",
+    "@azure-tools/typespec-client-generator-core": "0.66.1",
     "@azure-tools/typespec-liftr-base": "0.12.0",
-    "@microsoft/api-extractor": "^7.57.6",
+    "@microsoft/api-extractor": "^7.57.7",
     "@types/js-yaml": "~4.0.9",
     "@types/lodash": "~4.17.24",
-    "@types/node": "~25.3.5",
-    "@typescript-eslint/eslint-plugin": "~8.56.1",
-    "@typescript-eslint/parser": "~8.56.1",
-    "@typespec/compiler": "1.9.0",
-    "@typespec/events": "0.79.0",
-    "@typespec/http": "1.9.1",
-    "@typespec/openapi": "1.9.0",
-    "@typespec/openapi3": "1.9.0",
-    "@typespec/rest": "0.79.0",
-    "@typespec/sse": "0.79.0",
-    "@typespec/streams": "0.79.0",
-    "@typespec/tspd": "0.74.0",
-    "@typespec/versioning": "0.79.0",
-    "@typespec/xml": "0.79.0",
+    "@types/node": "~25.4.0",
+    "@typescript-eslint/eslint-plugin": "~8.57.0",
+    "@typescript-eslint/parser": "~8.57.0",
+    "@typespec/compiler": "1.10.0",
+    "@typespec/events": "0.80.0",
+    "@typespec/http": "1.10.0",
+    "@typespec/openapi": "1.10.0",
+    "@typespec/openapi3": "1.10.0",
+    "@typespec/rest": "0.80.0",
+    "@typespec/sse": "0.80.0",
+    "@typespec/streams": "0.80.0",
+    "@typespec/tspd": "0.74.1",
+    "@typespec/versioning": "0.80.0",
+    "@typespec/xml": "0.80.0",
     "@vitest/coverage-v8": "^4.0.18",
     "@vitest/ui": "^4.0.18",
     "c8": "~11.0.0",
@@ -102,12 +102,12 @@
     "prettier": "~3.8.1",
     "rimraf": "~6.1.3",
     "typescript": "~5.9.3",
-    "typescript-eslint": "^8.56.1",
+    "typescript-eslint": "^8.57.0",
     "vitest": "^4.0.18"
   },
   "overrides": {
     "eslint": "~10.0.3",
-    "@typescript-eslint/eslint-plugin": "~8.56.1",
-    "@typescript-eslint/parser": "~8.56.1"
+    "@typescript-eslint/eslint-plugin": "~8.57.0",
+    "@typescript-eslint/parser": "~8.57.0"
   }
 }
diff --git a/typespec-tests/package.json b/typespec-tests/package.json
index f9064321f4..61ada79b45 100644
--- a/typespec-tests/package.json
+++ b/typespec-tests/package.json
@@ -9,31 +9,31 @@
     "spector-serve": "tsp-spector serve ./node_modules/@typespec/http-specs/specs ./node_modules/@azure-tools/azure-http-specs/specs --coverageFile ./tsp-spector-coverage-java.json"
   },
   "dependencies": {
-    "@typespec/spec-api": "0.1.0-alpha.12",
-    "@typespec/spector": "0.1.0-alpha.23",
-    "@typespec/http-specs": "0.1.0-alpha.32",
-    "@azure-tools/azure-http-specs": "0.1.0-alpha.37",
-    "@azure-tools/typespec-java": "file:/../typespec-extension/azure-tools-typespec-java-0.42.0.tgz"
+    "@typespec/spec-api": "0.1.0-alpha.13",
+    "@typespec/spector": "0.1.0-alpha.24",
+    "@typespec/http-specs": "0.1.0-alpha.33",
+    "@azure-tools/azure-http-specs": "0.1.0-alpha.38",
+    "@azure-tools/typespec-java": "file:/../typespec-extension/azure-tools-typespec-java-0.43.0.tgz"
   },
   "devDependencies": {
-    "@typespec/prettier-plugin-typespec": "^1.9.0",
+    "@typespec/prettier-plugin-typespec": "^1.10.0",
     "prettier-plugin-organize-imports": "^4.3.0",
     "prettier": "^3.8.1"
   },
   "overrides": {
-    "@typespec/compiler": "1.9.0",
-    "@typespec/http": "1.9.1",
-    "@typespec/rest": "0.79.0",
-    "@typespec/versioning": "0.79.0",
-    "@typespec/openapi": "1.9.0",
-    "@typespec/xml": "0.79.0",
-    "@typespec/events": "0.79.0",
-    "@typespec/sse": "0.79.0",
-    "@typespec/streams": "0.79.0",
-    "@azure-tools/typespec-azure-core": "0.65.0",
-    "@azure-tools/typespec-client-generator-core": "0.65.4",
-    "@azure-tools/typespec-azure-resource-manager": "0.65.0",
-    "@azure-tools/typespec-autorest": "0.65.0",
+    "@typespec/compiler": "1.10.0",
+    "@typespec/http": "1.10.0",
+    "@typespec/rest": "0.80.0",
+    "@typespec/versioning": "0.80.0",
+    "@typespec/openapi": "1.10.0",
+    "@typespec/xml": "0.80.0",
+    "@typespec/events": "0.80.0",
+    "@typespec/sse": "0.80.0",
+    "@typespec/streams": "0.80.0",
+    "@azure-tools/typespec-azure-core": "0.66.0",
+    "@azure-tools/typespec-client-generator-core": "0.66.1",
+    "@azure-tools/typespec-azure-resource-manager": "0.66.0",
+    "@azure-tools/typespec-autorest": "0.66.0",
     "@azure-tools/typespec-liftr-base": "0.12.0"
   },
   "private": true
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamAsyncClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamAsyncClient.java
index 199262de6a..d8b5cb4bfd 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.HeaderParamClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.HeaderParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClient.java
similarity index 94%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClient.java
index 89f1ea9ee4..15970b4e19 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.HeaderParamClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.HeaderParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClientBuilder.java
index 5f08efc49c..9814ad550b 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/HeaderParamClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.HeaderParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.HeaderParamClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -51,7 +51,7 @@ public final class HeaderParamClientBuilder implements HttpTrait<HeaderParamClie
 
     @Generated
     private static final Map<String, String> PROPERTIES
-        = CoreUtils.getProperties("_specs_-azure-clientgenerator-core-clientinitialization-defaultclient.properties");
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-defaultclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsAsyncClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsAsyncClient.java
index bd7a724adc..af1808087a 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MixedParamsClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.WithBodyRequest;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MixedParamsClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.WithBodyRequest;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClient.java
similarity index 94%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClient.java
index f0ec7dbdac..d67b25cee4 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MixedParamsClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.WithBodyRequest;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MixedParamsClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.WithBodyRequest;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClientBuilder.java
index 74619a2b58..fc1da88f18 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MixedParamsClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MixedParamsClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MixedParamsClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -51,7 +51,7 @@ public final class MixedParamsClientBuilder implements HttpTrait<MixedParamsClie
 
     @Generated
     private static final Map<String, String> PROPERTIES
-        = CoreUtils.getProperties("_specs_-azure-clientgenerator-core-clientinitialization-defaultclient.properties");
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-defaultclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsAsyncClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsAsyncClient.java
index 87e4489609..675066ddd6 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MultipleParamsClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MultipleParamsClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClient.java
similarity index 94%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClient.java
index 3135bfd196..6957056c7e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MultipleParamsClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MultipleParamsClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClientBuilder.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClientBuilder.java
index 6f4fe5840f..81f14de1ff 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/MultipleParamsClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MultipleParamsClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.MultipleParamsClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -51,7 +51,7 @@ public final class MultipleParamsClientBuilder implements HttpTrait<MultiplePara
 
     @Generated
     private static final Map<String, String> PROPERTIES
-        = CoreUtils.getProperties("_specs_-azure-clientgenerator-core-clientinitialization-defaultclient.properties");
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-defaultclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasAsyncClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasAsyncClient.java
index 15dc398995..d7c603cfce 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.ParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.ParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClient.java
index fb4db9e8c8..444287dcb9 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.ParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.ParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClientBuilder.java
index e458847dc1..cccfce5755 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/ParamAliasClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.ParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.ParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -51,7 +51,7 @@ public final class ParamAliasClientBuilder implements HttpTrait<ParamAliasClient
 
     @Generated
     private static final Map<String, String> PROPERTIES
-        = CoreUtils.getProperties("_specs_-azure-clientgenerator-core-clientinitialization-defaultclient.properties");
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-defaultclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamAsyncClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamAsyncClient.java
index a306c54dea..fffdd32a35 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.PathParamClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.PathParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClient.java
index cb9a456624..0b44c5793a 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.PathParamClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.PathParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClientBuilder.java
index 6293f96269..acc4851dbd 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/PathParamClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.PathParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.PathParamClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -51,7 +51,7 @@ public final class PathParamClientBuilder implements HttpTrait<PathParamClientBu
 
     @Generated
     private static final Map<String, String> PROPERTIES
-        = CoreUtils.getProperties("_specs_-azure-clientgenerator-core-clientinitialization-defaultclient.properties");
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-defaultclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamAsyncClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamAsyncClient.java
index 5612353885..c80b04f8fc 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.QueryParamClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.QueryParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClient.java
index f37d717bc1..79de18b60a 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.QueryParamClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.QueryParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClientBuilder.java
index 88e06209f2..87f5155eaa 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/QueryParamClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation.QueryParamClientImpl;
+import azure.clientgenerator.core.clientinitialization.defaultclient.implementation.QueryParamClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -51,7 +51,7 @@ public final class QueryParamClientBuilder implements HttpTrait<QueryParamClient
 
     @Generated
     private static final Map<String, String> PROPERTIES
-        = CoreUtils.getProperties("_specs_-azure-clientgenerator-core-clientinitialization-defaultclient.properties");
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-defaultclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/HeaderParamClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/HeaderParamClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/HeaderParamClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/HeaderParamClientImpl.java
index 77e8bce8fa..9d71938ee8 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/HeaderParamClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/HeaderParamClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
+package azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
 
 import com.azure.core.annotation.BodyParam;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MixedParamsClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MixedParamsClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MixedParamsClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MixedParamsClientImpl.java
index 271682bc70..cc215cba91 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MixedParamsClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MixedParamsClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
+package azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
 
 import com.azure.core.annotation.BodyParam;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MultipleParamsClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MultipleParamsClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MultipleParamsClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MultipleParamsClientImpl.java
index 5481937e75..5adf51cb5e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MultipleParamsClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/MultipleParamsClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
+package azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
 
 import com.azure.core.annotation.BodyParam;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/ParamAliasClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/ParamAliasClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/ParamAliasClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/ParamAliasClientImpl.java
index 4ac7c32b57..ac9e42b8f1 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/ParamAliasClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/ParamAliasClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
+package azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
 
 import com.azure.core.annotation.ExpectedResponses;
 import com.azure.core.annotation.Get;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/PathParamClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/PathParamClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/PathParamClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/PathParamClientImpl.java
index 3da147ba50..1498d32b3b 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/PathParamClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/PathParamClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
+package azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/QueryParamClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/QueryParamClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/QueryParamClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/QueryParamClientImpl.java
index 98e28569e3..87fd2cb592 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/QueryParamClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/QueryParamClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
+package azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/package-info.java
similarity index 80%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/package-info.java
index 95c5a22793..146f7a467e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/implementation/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
+package azure.clientgenerator.core.clientinitialization.defaultclient.implementation;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/BlobProperties.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/BlobProperties.java
similarity index 98%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/BlobProperties.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/BlobProperties.java
index d89c3c1bb2..4c721e41d6 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/BlobProperties.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/BlobProperties.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models;
+package azure.clientgenerator.core.clientinitialization.defaultclient.models;
 
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.Immutable;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/Input.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/Input.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/Input.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/Input.java
index 850a0a709a..3ce2d74c95 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/Input.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/Input.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models;
+package azure.clientgenerator.core.clientinitialization.defaultclient.models;
 
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.Immutable;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/WithBodyRequest.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/WithBodyRequest.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/WithBodyRequest.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/WithBodyRequest.java
index f90a86e77a..f884b7ea4e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/WithBodyRequest.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/WithBodyRequest.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models;
+package azure.clientgenerator.core.clientinitialization.defaultclient.models;
 
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.Immutable;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/package-info.java
similarity index 81%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/package-info.java
index 029a6aa22c..1135d1c1bc 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/models/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/models/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.models;
+package azure.clientgenerator.core.clientinitialization.defaultclient.models;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/package-info.java
similarity index 82%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/package-info.java
index 59ca2121be..e65528b6e7 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/defaultclient/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient;
+package azure.clientgenerator.core.clientinitialization.defaultclient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderAsyncClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderAsyncClient.java
index db261f11fb..2779ce6195 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithHeaderClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithHeaderClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClient.java
index 1c3b865584..4ba0a122bb 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithHeaderClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithHeaderClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClientBuilder.java
index 409a296c73..e4e1a569c5 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithHeaderClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithHeaderClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithHeaderClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -52,8 +52,8 @@ public final class IndividuallyNestedWithHeaderClientBuilder implements
     private static final String SDK_VERSION = "version";
 
     @Generated
-    private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
+    private static final Map<String, String> PROPERTIES
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedAsyncClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedAsyncClient.java
index 53c3cee677..b7da75aac0 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMixedClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMixedClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClient.java
index ef09cdbfc1..653331dd8e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMixedClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMixedClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClientBuilder.java
index 33cef9e20a..9d3eb0b41f 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMixedClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMixedClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMixedClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -52,8 +52,8 @@ public final class IndividuallyNestedWithMixedClientBuilder implements
     private static final String SDK_VERSION = "version";
 
     @Generated
-    private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
+    private static final Map<String, String> PROPERTIES
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleAsyncClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleAsyncClient.java
index 2a6bc41f29..1bd3bee141 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMultipleClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMultipleClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClient.java
index 87001b2643..f41ef644dd 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMultipleClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMultipleClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClientBuilder.java
index 903427389f..6fa0ff162e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithMultipleClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMultipleClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithMultipleClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -53,8 +53,8 @@ public final class IndividuallyNestedWithMultipleClientBuilder
     private static final String SDK_VERSION = "version";
 
     @Generated
-    private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
+    private static final Map<String, String> PROPERTIES
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasAsyncClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasAsyncClient.java
index 3af980f242..8b571536b3 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClient.java
index 2ca0e3612a..5b1c79b4cf 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClientBuilder.java
index f79386da36..08bbf80e0c 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithParamAliasClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -55,8 +55,8 @@ public final class IndividuallyNestedWithParamAliasClientBuilder
     private static final String SDK_VERSION = "version";
 
     @Generated
-    private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
+    private static final Map<String, String> PROPERTIES
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathAsyncClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathAsyncClient.java
index de5fabcb75..2395fb1d54 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithPathClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithPathClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClient.java
index 164c42056a..1a628e3512 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithPathClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithPathClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClientBuilder.java
index 717cfd3c82..a6e6ecf693 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithPathClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithPathClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithPathClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -52,8 +52,8 @@ public final class IndividuallyNestedWithPathClientBuilder implements
     private static final String SDK_VERSION = "version";
 
     @Generated
-    private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
+    private static final Map<String, String> PROPERTIES
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryAsyncClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryAsyncClient.java
index 411ab4f040..4687e43da9 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithQueryClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithQueryClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClient.java
index f70932d97c..386620bb3f 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithQueryClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithQueryClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClientBuilder.java
index d6fb4e21a3..b9bf96e40a 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyNestedWithQueryClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithQueryClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.implementation.IndividuallyNestedWithQueryClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -52,8 +52,8 @@ public final class IndividuallyNestedWithQueryClientBuilder implements
     private static final String SDK_VERSION = "version";
 
     @Generated
-    private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
+    private static final Map<String, String> PROPERTIES
+        = CoreUtils.getProperties("azure-clientgenerator-core-clientinitialization-individuallyclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithHeaderClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithHeaderClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithHeaderClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithHeaderClientImpl.java
index 5e3f94b1cf..a066012e6a 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithHeaderClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithHeaderClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMixedClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMixedClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMixedClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMixedClientImpl.java
index dfba5ce457..bfd2b9633e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMixedClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMixedClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMultipleClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMultipleClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMultipleClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMultipleClientImpl.java
index f310a4e56c..73f3a63e34 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMultipleClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithMultipleClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithParamAliasClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithParamAliasClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithParamAliasClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithParamAliasClientImpl.java
index 6d43e49794..b8b596731d 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithParamAliasClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithParamAliasClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
 
 import com.azure.core.annotation.ExpectedResponses;
 import com.azure.core.annotation.Get;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithPathClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithPathClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithPathClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithPathClientImpl.java
index c82909a98c..f94075e66e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithPathClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithPathClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithQueryClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithQueryClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithQueryClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithQueryClientImpl.java
index 5704371b6f..64794f5a5c 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithQueryClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/IndividuallyNestedWithQueryClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/package-info.java
similarity index 79%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/package-info.java
index 5e9e3e0121..eeeb569ccc 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/implementation/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.implementation;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/models/BlobProperties.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/models/BlobProperties.java
similarity index 98%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/models/BlobProperties.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/models/BlobProperties.java
index 74ff6516b8..110e907c82 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/models/BlobProperties.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/models/BlobProperties.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.models;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.models;
 
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.Immutable;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/models/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/models/package-info.java
similarity index 80%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/models/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/models/package-info.java
index 34507e7f5a..251083ae64 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/models/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/models/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.models;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.models;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/package-info.java
similarity index 81%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/package-info.java
index 59b682bced..9a5bb32001 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyclient/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient;
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentAsyncClient.java
similarity index 94%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentAsyncClient.java
index 2d98f37074..fb6bcc5835 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClient;
 
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClient.java
similarity index 94%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClient.java
index d9cc367647..29d74a5138 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClient;
 
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientBuilder.java
index 05527a9fa9..295021efe0 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -51,7 +51,7 @@ public final class IndividuallyParentClientBuilder implements HttpTrait<Individu
 
     @Generated
     private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
+        .getProperties("azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderAsyncClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderAsyncClient.java
index a40dc2c42e..903abb7c7b 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithHeaderClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithHeaderClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClient.java
index 9d4b1b5726..67beeb628e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithHeaderClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithHeaderClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClientBuilder.java
index 79ca34e701..01c34b1003 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithHeaderClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithHeaderClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithHeaderClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -56,7 +56,7 @@ public final class IndividuallyParentNestedWithHeaderClientBuilder
 
     @Generated
     private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
+        .getProperties("azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedAsyncClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedAsyncClient.java
index 4a58ed6c18..acde1bf254 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMixedClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMixedClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClient.java
index a3937047c2..5525e0d8ab 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMixedClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMixedClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClientBuilder.java
index 32ea151be2..79ecfc6729 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMixedClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMixedClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMixedClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -56,7 +56,7 @@ public final class IndividuallyParentNestedWithMixedClientBuilder
 
     @Generated
     private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
+        .getProperties("azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleAsyncClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleAsyncClient.java
index 56f0f11ec2..ea28f37e70 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMultipleClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMultipleClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClient.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClient.java
index 0d5ea371b8..bcd04988ad 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMultipleClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMultipleClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClientBuilder.java
index d20811188c..c2b35f4aec 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithMultipleClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMultipleClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithMultipleClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -56,7 +56,7 @@ public final class IndividuallyParentNestedWithMultipleClientBuilder
 
     @Generated
     private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
+        .getProperties("azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasAsyncClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasAsyncClient.java
index 94679aa600..09fd5b1b47 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasAsyncClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClient.java
index d4e8214339..fc8456077d 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClient.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClientBuilder.java
index 4a6bd194a0..ed2cd85cb0 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithParamAliasClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithParamAliasClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithParamAliasClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -56,7 +56,7 @@ public final class IndividuallyParentNestedWithParamAliasClientBuilder
 
     @Generated
     private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
+        .getProperties("azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathAsyncClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathAsyncClient.java
index fcdab9bed8..87addaf2ba 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithPathClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithPathClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClient.java
index 3d91bcd3a7..7fb9a31426 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithPathClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithPathClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClientBuilder.java
index 0619b12c4e..e151bacc10 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithPathClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithPathClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithPathClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -56,7 +56,7 @@ public final class IndividuallyParentNestedWithPathClientBuilder
 
     @Generated
     private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
+        .getProperties("azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryAsyncClient.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryAsyncClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryAsyncClient.java
index e3cae797d8..d08a228542 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryAsyncClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithQueryClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithQueryClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClient.java
similarity index 95%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClient.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClient.java
index 5069a7cd00..c61919c1f1 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClient.java
@@ -2,10 +2,10 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithQueryClientImpl;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithQueryClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClientBuilder.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClientBuilder.java
similarity index 96%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClientBuilder.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClientBuilder.java
index 2534362896..264cc7722e 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClientBuilder.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentNestedWithQueryClientBuilder.java
@@ -2,9 +2,9 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithQueryClientImpl;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation.IndividuallyParentNestedWithQueryClientImpl;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ServiceClientBuilder;
 import com.azure.core.client.traits.ConfigurationTrait;
@@ -56,7 +56,7 @@ public final class IndividuallyParentNestedWithQueryClientBuilder
 
     @Generated
     private static final Map<String, String> PROPERTIES = CoreUtils
-        .getProperties("_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
+        .getProperties("azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties");
 
     @Generated
     private final List<HttpPipelinePolicy> pipelinePolicies;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentClientImpl.java
similarity index 98%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentClientImpl.java
index e5ac51fd7f..9fc555c894 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
 
 import com.azure.core.http.HttpPipeline;
 import com.azure.core.http.HttpPipelineBuilder;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithHeaderClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithHeaderClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithHeaderClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithHeaderClientImpl.java
index c974907925..ce080a8c39 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithHeaderClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithHeaderClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMixedClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMixedClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMixedClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMixedClientImpl.java
index efb36a71a1..89a2c072df 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMixedClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMixedClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMultipleClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMultipleClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMultipleClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMultipleClientImpl.java
index 3127e122df..576ef3cbc0 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMultipleClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithMultipleClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithParamAliasClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithParamAliasClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithParamAliasClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithParamAliasClientImpl.java
index c45bcc7fe6..e17cf89873 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithParamAliasClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithParamAliasClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
 
 import com.azure.core.annotation.ExpectedResponses;
 import com.azure.core.annotation.Get;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithPathClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithPathClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithPathClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithPathClientImpl.java
index bcf99fe609..15231ef67c 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithPathClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithPathClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithQueryClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithQueryClientImpl.java
similarity index 99%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithQueryClientImpl.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithQueryClientImpl.java
index c66818ef39..402c7697d7 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithQueryClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/IndividuallyParentNestedWithQueryClientImpl.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
 
 import com.azure.core.annotation.Delete;
 import com.azure.core.annotation.ExpectedResponses;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/package-info.java
similarity index 78%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/package-info.java
index 38e4e189db..33101bf578 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/implementation/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.implementation;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/BlobProperties.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/BlobProperties.java
similarity index 97%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/BlobProperties.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/BlobProperties.java
index 9896d015b2..a63457c798 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/BlobProperties.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/BlobProperties.java
@@ -2,7 +2,7 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.models;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.models;
 
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.Immutable;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/package-info.java
similarity index 80%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/package-info.java
index 0cfc765fd3..2c1566b44f 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/models/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.models;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.models;
diff --git a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/package-info.java b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/package-info.java
similarity index 81%
rename from typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/package-info.java
rename to typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/package-info.java
index d7088f0d78..1009faef5b 100644
--- a/typespec-tests/src/main/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/package-info.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/package-info.java
@@ -8,4 +8,4 @@
  * Test for client initialization decorator - moving parameters from method to client level.
  * <!-- end generated doc -->
  */
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
diff --git a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/FlattenPropertyAsyncClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/FlattenPropertyAsyncClient.java
index e4dd5e633d..7170464917 100644
--- a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/FlattenPropertyAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/FlattenPropertyAsyncClient.java
@@ -6,7 +6,9 @@
 
 import azure.clientgenerator.core.flattenproperty.implementation.FlattenPropertyClientImpl;
 import azure.clientgenerator.core.flattenproperty.models.FlattenModel;
+import azure.clientgenerator.core.flattenproperty.models.FlattenUnknownModel;
 import azure.clientgenerator.core.flattenproperty.models.NestedFlattenModel;
+import azure.clientgenerator.core.flattenproperty.models.Solution;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
@@ -136,6 +138,94 @@ public Mono<Response<BinaryData>> putNestedFlattenModelWithResponse(BinaryData i
         return this.serviceClient.putNestedFlattenModelWithResponseAsync(input, requestOptions);
     }
 
+    /**
+     * The putFlattenUnknownModel operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties: BinaryData (Optional)
+     * }
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties: BinaryData (Optional)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param input The input parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return this is the model with unknown type properties to be flattened along with {@link Response} on successful
+     * completion of {@link Mono}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Response<BinaryData>> putFlattenUnknownModelWithResponse(BinaryData input,
+        RequestOptions requestOptions) {
+        return this.serviceClient.putFlattenUnknownModelWithResponseAsync(input, requestOptions);
+    }
+
+    /**
+     * The putFlattenReadOnlyModel operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties (Optional): {
+     *         solutionId: String (Optional)
+     *         title: String (Optional)
+     *         content: String (Optional)
+     *     }
+     * }
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties (Optional): {
+     *         solutionId: String (Optional)
+     *         title: String (Optional)
+     *         content: String (Optional)
+     *     }
+     * }
+     * }
+     * </pre>
+     * 
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return this is the model with flattened properties that are all read-only along with {@link Response} on
+     * successful completion of {@link Mono}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Response<BinaryData>> putFlattenReadOnlyModelWithResponse(BinaryData body,
+        RequestOptions requestOptions) {
+        return this.serviceClient.putFlattenReadOnlyModelWithResponseAsync(body, requestOptions);
+    }
+
     /**
      * The putFlattenModel operation.
      * 
@@ -177,4 +267,49 @@ public Mono<NestedFlattenModel> putNestedFlattenModel(NestedFlattenModel input)
         return putNestedFlattenModelWithResponse(BinaryData.fromObject(input), requestOptions).flatMap(FluxUtil::toMono)
             .map(protocolMethodData -> protocolMethodData.toObject(NestedFlattenModel.class));
     }
+
+    /**
+     * The putFlattenUnknownModel operation.
+     * 
+     * @param input The input parameter.
+     * @throws IllegalArgumentException thrown if parameters fail the validation.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return this is the model with unknown type properties to be flattened on successful completion of {@link Mono}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<FlattenUnknownModel> putFlattenUnknownModel(FlattenUnknownModel input) {
+        // Generated convenience method for putFlattenUnknownModelWithResponse
+        RequestOptions requestOptions = new RequestOptions();
+        return putFlattenUnknownModelWithResponse(BinaryData.fromObject(input), requestOptions)
+            .flatMap(FluxUtil::toMono)
+            .map(protocolMethodData -> protocolMethodData.toObject(FlattenUnknownModel.class));
+    }
+
+    /**
+     * The putFlattenReadOnlyModel operation.
+     * 
+     * @param body The body parameter.
+     * @throws IllegalArgumentException thrown if parameters fail the validation.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return this is the model with flattened properties that are all read-only on successful completion of
+     * {@link Mono}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Solution> putFlattenReadOnlyModel(Solution body) {
+        // Generated convenience method for putFlattenReadOnlyModelWithResponse
+        RequestOptions requestOptions = new RequestOptions();
+        return putFlattenReadOnlyModelWithResponse(BinaryData.fromObject(body), requestOptions)
+            .flatMap(FluxUtil::toMono)
+            .map(protocolMethodData -> protocolMethodData.toObject(Solution.class));
+    }
 }
diff --git a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/FlattenPropertyClient.java b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/FlattenPropertyClient.java
index 6df185bf86..9188f468a6 100644
--- a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/FlattenPropertyClient.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/FlattenPropertyClient.java
@@ -6,7 +6,9 @@
 
 import azure.clientgenerator.core.flattenproperty.implementation.FlattenPropertyClientImpl;
 import azure.clientgenerator.core.flattenproperty.models.FlattenModel;
+import azure.clientgenerator.core.flattenproperty.models.FlattenUnknownModel;
 import azure.clientgenerator.core.flattenproperty.models.NestedFlattenModel;
+import azure.clientgenerator.core.flattenproperty.models.Solution;
 import com.azure.core.annotation.Generated;
 import com.azure.core.annotation.ReturnType;
 import com.azure.core.annotation.ServiceClient;
@@ -131,6 +133,90 @@ public Response<BinaryData> putNestedFlattenModelWithResponse(BinaryData input,
         return this.serviceClient.putNestedFlattenModelWithResponse(input, requestOptions);
     }
 
+    /**
+     * The putFlattenUnknownModel operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties: BinaryData (Optional)
+     * }
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties: BinaryData (Optional)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param input The input parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return this is the model with unknown type properties to be flattened along with {@link Response}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Response<BinaryData> putFlattenUnknownModelWithResponse(BinaryData input, RequestOptions requestOptions) {
+        return this.serviceClient.putFlattenUnknownModelWithResponse(input, requestOptions);
+    }
+
+    /**
+     * The putFlattenReadOnlyModel operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties (Optional): {
+     *         solutionId: String (Optional)
+     *         title: String (Optional)
+     *         content: String (Optional)
+     *     }
+     * }
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties (Optional): {
+     *         solutionId: String (Optional)
+     *         title: String (Optional)
+     *         content: String (Optional)
+     *     }
+     * }
+     * }
+     * </pre>
+     * 
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return this is the model with flattened properties that are all read-only along with {@link Response}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Response<BinaryData> putFlattenReadOnlyModelWithResponse(BinaryData body, RequestOptions requestOptions) {
+        return this.serviceClient.putFlattenReadOnlyModelWithResponse(body, requestOptions);
+    }
+
     /**
      * The putFlattenModel operation.
      * 
@@ -172,4 +258,46 @@ public NestedFlattenModel putNestedFlattenModel(NestedFlattenModel input) {
         return putNestedFlattenModelWithResponse(BinaryData.fromObject(input), requestOptions).getValue()
             .toObject(NestedFlattenModel.class);
     }
+
+    /**
+     * The putFlattenUnknownModel operation.
+     * 
+     * @param input The input parameter.
+     * @throws IllegalArgumentException thrown if parameters fail the validation.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return this is the model with unknown type properties to be flattened.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public FlattenUnknownModel putFlattenUnknownModel(FlattenUnknownModel input) {
+        // Generated convenience method for putFlattenUnknownModelWithResponse
+        RequestOptions requestOptions = new RequestOptions();
+        return putFlattenUnknownModelWithResponse(BinaryData.fromObject(input), requestOptions).getValue()
+            .toObject(FlattenUnknownModel.class);
+    }
+
+    /**
+     * The putFlattenReadOnlyModel operation.
+     * 
+     * @param body The body parameter.
+     * @throws IllegalArgumentException thrown if parameters fail the validation.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return this is the model with flattened properties that are all read-only.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Solution putFlattenReadOnlyModel(Solution body) {
+        // Generated convenience method for putFlattenReadOnlyModelWithResponse
+        RequestOptions requestOptions = new RequestOptions();
+        return putFlattenReadOnlyModelWithResponse(BinaryData.fromObject(body), requestOptions).getValue()
+            .toObject(Solution.class);
+    }
 }
diff --git a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/implementation/FlattenPropertyClientImpl.java b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/implementation/FlattenPropertyClientImpl.java
index b15d7fb3eb..c204dea4b6 100644
--- a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/implementation/FlattenPropertyClientImpl.java
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/implementation/FlattenPropertyClientImpl.java
@@ -164,6 +164,46 @@ Mono<Response<BinaryData>> putNestedFlattenModel(@HostParam("endpoint") String e
         Response<BinaryData> putNestedFlattenModelSync(@HostParam("endpoint") String endpoint,
             @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
             @BodyParam("application/json") BinaryData input, RequestOptions requestOptions, Context context);
+
+        @Put("/azure/client-generator-core/flatten-property/flattenUnknownModel")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Mono<Response<BinaryData>> putFlattenUnknownModel(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
+            @BodyParam("application/json") BinaryData input, RequestOptions requestOptions, Context context);
+
+        @Put("/azure/client-generator-core/flatten-property/flattenUnknownModel")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Response<BinaryData> putFlattenUnknownModelSync(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
+            @BodyParam("application/json") BinaryData input, RequestOptions requestOptions, Context context);
+
+        @Put("/azure/client-generator-core/flatten-property/flattenReadOnlyModel")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Mono<Response<BinaryData>> putFlattenReadOnlyModel(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
+            @BodyParam("application/json") BinaryData body, RequestOptions requestOptions, Context context);
+
+        @Put("/azure/client-generator-core/flatten-property/flattenReadOnlyModel")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Response<BinaryData> putFlattenReadOnlyModelSync(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
+            @BodyParam("application/json") BinaryData body, RequestOptions requestOptions, Context context);
     }
 
     /**
@@ -365,4 +405,184 @@ public Response<BinaryData> putNestedFlattenModelWithResponse(BinaryData input,
         return service.putNestedFlattenModelSync(this.getEndpoint(), contentType, accept, input, requestOptions,
             Context.NONE);
     }
+
+    /**
+     * The putFlattenUnknownModel operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties: BinaryData (Optional)
+     * }
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties: BinaryData (Optional)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param input The input parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return this is the model with unknown type properties to be flattened along with {@link Response} on successful
+     * completion of {@link Mono}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Response<BinaryData>> putFlattenUnknownModelWithResponseAsync(BinaryData input,
+        RequestOptions requestOptions) {
+        final String contentType = "application/json";
+        final String accept = "application/json";
+        return FluxUtil.withContext(context -> service.putFlattenUnknownModel(this.getEndpoint(), contentType, accept,
+            input, requestOptions, context));
+    }
+
+    /**
+     * The putFlattenUnknownModel operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties: BinaryData (Optional)
+     * }
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties: BinaryData (Optional)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param input The input parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return this is the model with unknown type properties to be flattened along with {@link Response}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Response<BinaryData> putFlattenUnknownModelWithResponse(BinaryData input, RequestOptions requestOptions) {
+        final String contentType = "application/json";
+        final String accept = "application/json";
+        return service.putFlattenUnknownModelSync(this.getEndpoint(), contentType, accept, input, requestOptions,
+            Context.NONE);
+    }
+
+    /**
+     * The putFlattenReadOnlyModel operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties (Optional): {
+     *         solutionId: String (Optional)
+     *         title: String (Optional)
+     *         content: String (Optional)
+     *     }
+     * }
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties (Optional): {
+     *         solutionId: String (Optional)
+     *         title: String (Optional)
+     *         content: String (Optional)
+     *     }
+     * }
+     * }
+     * </pre>
+     * 
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return this is the model with flattened properties that are all read-only along with {@link Response} on
+     * successful completion of {@link Mono}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Response<BinaryData>> putFlattenReadOnlyModelWithResponseAsync(BinaryData body,
+        RequestOptions requestOptions) {
+        final String contentType = "application/json";
+        final String accept = "application/json";
+        return FluxUtil.withContext(context -> service.putFlattenReadOnlyModel(this.getEndpoint(), contentType, accept,
+            body, requestOptions, context));
+    }
+
+    /**
+     * The putFlattenReadOnlyModel operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties (Optional): {
+     *         solutionId: String (Optional)
+     *         title: String (Optional)
+     *         content: String (Optional)
+     *     }
+     * }
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     name: String (Required)
+     *     properties (Optional): {
+     *         solutionId: String (Optional)
+     *         title: String (Optional)
+     *         content: String (Optional)
+     *     }
+     * }
+     * }
+     * </pre>
+     * 
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return this is the model with flattened properties that are all read-only along with {@link Response}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Response<BinaryData> putFlattenReadOnlyModelWithResponse(BinaryData body, RequestOptions requestOptions) {
+        final String contentType = "application/json";
+        final String accept = "application/json";
+        return service.putFlattenReadOnlyModelSync(this.getEndpoint(), contentType, accept, body, requestOptions,
+            Context.NONE);
+    }
 }
diff --git a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/FlattenUnknownModel.java b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/FlattenUnknownModel.java
new file mode 100644
index 0000000000..66bd1f48f4
--- /dev/null
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/FlattenUnknownModel.java
@@ -0,0 +1,123 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+// Code generated by Microsoft (R) TypeSpec Code Generator.
+
+package azure.clientgenerator.core.flattenproperty.models;
+
+import com.azure.core.annotation.Fluent;
+import com.azure.core.annotation.Generated;
+import com.azure.core.util.BinaryData;
+import com.azure.json.JsonReader;
+import com.azure.json.JsonSerializable;
+import com.azure.json.JsonToken;
+import com.azure.json.JsonWriter;
+import java.io.IOException;
+
+/**
+ * This is the model with unknown type properties to be flattened.
+ */
+@Fluent
+public final class FlattenUnknownModel implements JsonSerializable<FlattenUnknownModel> {
+    /*
+     * The name property.
+     */
+    @Generated
+    private final String name;
+
+    /*
+     * The properties property.
+     */
+    @Generated
+    private BinaryData properties;
+
+    /**
+     * Creates an instance of FlattenUnknownModel class.
+     * 
+     * @param name the name value to set.
+     */
+    @Generated
+    public FlattenUnknownModel(String name) {
+        this.name = name;
+    }
+
+    /**
+     * Get the name property: The name property.
+     * 
+     * @return the name value.
+     */
+    @Generated
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * Get the properties property: The properties property.
+     * 
+     * @return the properties value.
+     */
+    @Generated
+    public BinaryData getProperties() {
+        return this.properties;
+    }
+
+    /**
+     * Set the properties property: The properties property.
+     * 
+     * @param properties the properties value to set.
+     * @return the FlattenUnknownModel object itself.
+     */
+    @Generated
+    public FlattenUnknownModel setProperties(BinaryData properties) {
+        this.properties = properties;
+        return this;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Generated
+    @Override
+    public JsonWriter toJson(JsonWriter jsonWriter) throws IOException {
+        jsonWriter.writeStartObject();
+        jsonWriter.writeStringField("name", this.name);
+        if (this.properties != null) {
+            jsonWriter.writeFieldName("properties");
+            this.properties.writeTo(jsonWriter);
+        }
+        return jsonWriter.writeEndObject();
+    }
+
+    /**
+     * Reads an instance of FlattenUnknownModel from the JsonReader.
+     * 
+     * @param jsonReader The JsonReader being read.
+     * @return An instance of FlattenUnknownModel if the JsonReader was pointing to an instance of it, or null if it was
+     * pointing to JSON null.
+     * @throws IllegalStateException If the deserialized JSON object was missing any required properties.
+     * @throws IOException If an error occurs while reading the FlattenUnknownModel.
+     */
+    @Generated
+    public static FlattenUnknownModel fromJson(JsonReader jsonReader) throws IOException {
+        return jsonReader.readObject(reader -> {
+            String name = null;
+            BinaryData properties = null;
+            while (reader.nextToken() != JsonToken.END_OBJECT) {
+                String fieldName = reader.getFieldName();
+                reader.nextToken();
+
+                if ("name".equals(fieldName)) {
+                    name = reader.getString();
+                } else if ("properties".equals(fieldName)) {
+                    properties
+                        = reader.getNullable(nonNullReader -> BinaryData.fromObject(nonNullReader.readUntyped()));
+                } else {
+                    reader.skipChildren();
+                }
+            }
+            FlattenUnknownModel deserializedFlattenUnknownModel = new FlattenUnknownModel(name);
+            deserializedFlattenUnknownModel.properties = properties;
+
+            return deserializedFlattenUnknownModel;
+        });
+    }
+}
diff --git a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/Solution.java b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/Solution.java
new file mode 100644
index 0000000000..5eda5a1882
--- /dev/null
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/Solution.java
@@ -0,0 +1,118 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+// Code generated by Microsoft (R) TypeSpec Code Generator.
+
+package azure.clientgenerator.core.flattenproperty.models;
+
+import com.azure.core.annotation.Fluent;
+import com.azure.core.annotation.Generated;
+import com.azure.json.JsonReader;
+import com.azure.json.JsonSerializable;
+import com.azure.json.JsonToken;
+import com.azure.json.JsonWriter;
+import java.io.IOException;
+
+/**
+ * This is the model with flattened properties that are all read-only.
+ */
+@Fluent
+public final class Solution implements JsonSerializable<Solution> {
+    /*
+     * The name property.
+     */
+    @Generated
+    private final String name;
+
+    /*
+     * The properties property.
+     */
+    @Generated
+    private SolutionProperties properties;
+
+    /**
+     * Creates an instance of Solution class.
+     * 
+     * @param name the name value to set.
+     */
+    @Generated
+    public Solution(String name) {
+        this.name = name;
+    }
+
+    /**
+     * Get the name property: The name property.
+     * 
+     * @return the name value.
+     */
+    @Generated
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * Get the properties property: The properties property.
+     * 
+     * @return the properties value.
+     */
+    @Generated
+    public SolutionProperties getProperties() {
+        return this.properties;
+    }
+
+    /**
+     * Set the properties property: The properties property.
+     * 
+     * @param properties the properties value to set.
+     * @return the Solution object itself.
+     */
+    @Generated
+    public Solution setProperties(SolutionProperties properties) {
+        this.properties = properties;
+        return this;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Generated
+    @Override
+    public JsonWriter toJson(JsonWriter jsonWriter) throws IOException {
+        jsonWriter.writeStartObject();
+        jsonWriter.writeStringField("name", this.name);
+        jsonWriter.writeJsonField("properties", this.properties);
+        return jsonWriter.writeEndObject();
+    }
+
+    /**
+     * Reads an instance of Solution from the JsonReader.
+     * 
+     * @param jsonReader The JsonReader being read.
+     * @return An instance of Solution if the JsonReader was pointing to an instance of it, or null if it was pointing
+     * to JSON null.
+     * @throws IllegalStateException If the deserialized JSON object was missing any required properties.
+     * @throws IOException If an error occurs while reading the Solution.
+     */
+    @Generated
+    public static Solution fromJson(JsonReader jsonReader) throws IOException {
+        return jsonReader.readObject(reader -> {
+            String name = null;
+            SolutionProperties properties = null;
+            while (reader.nextToken() != JsonToken.END_OBJECT) {
+                String fieldName = reader.getFieldName();
+                reader.nextToken();
+
+                if ("name".equals(fieldName)) {
+                    name = reader.getString();
+                } else if ("properties".equals(fieldName)) {
+                    properties = SolutionProperties.fromJson(reader);
+                } else {
+                    reader.skipChildren();
+                }
+            }
+            Solution deserializedSolution = new Solution(name);
+            deserializedSolution.properties = properties;
+
+            return deserializedSolution;
+        });
+    }
+}
diff --git a/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/SolutionProperties.java b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/SolutionProperties.java
new file mode 100644
index 0000000000..d69aa8bacf
--- /dev/null
+++ b/typespec-tests/src/main/java/azure/clientgenerator/core/flattenproperty/models/SolutionProperties.java
@@ -0,0 +1,115 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+// Code generated by Microsoft (R) TypeSpec Code Generator.
+
+package azure.clientgenerator.core.flattenproperty.models;
+
+import com.azure.core.annotation.Generated;
+import com.azure.core.annotation.Immutable;
+import com.azure.json.JsonReader;
+import com.azure.json.JsonSerializable;
+import com.azure.json.JsonToken;
+import com.azure.json.JsonWriter;
+import java.io.IOException;
+
+/**
+ * This is the model with all read-only properties to be flattened.
+ */
+@Immutable
+public final class SolutionProperties implements JsonSerializable<SolutionProperties> {
+    /*
+     * The solutionId property.
+     */
+    @Generated
+    private String solutionId;
+
+    /*
+     * The title property.
+     */
+    @Generated
+    private String title;
+
+    /*
+     * The content property.
+     */
+    @Generated
+    private String content;
+
+    /**
+     * Creates an instance of SolutionProperties class.
+     */
+    @Generated
+    public SolutionProperties() {
+    }
+
+    /**
+     * Get the solutionId property: The solutionId property.
+     * 
+     * @return the solutionId value.
+     */
+    @Generated
+    public String getSolutionId() {
+        return this.solutionId;
+    }
+
+    /**
+     * Get the title property: The title property.
+     * 
+     * @return the title value.
+     */
+    @Generated
+    public String getTitle() {
+        return this.title;
+    }
+
+    /**
+     * Get the content property: The content property.
+     * 
+     * @return the content value.
+     */
+    @Generated
+    public String getContent() {
+        return this.content;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Generated
+    @Override
+    public JsonWriter toJson(JsonWriter jsonWriter) throws IOException {
+        jsonWriter.writeStartObject();
+        return jsonWriter.writeEndObject();
+    }
+
+    /**
+     * Reads an instance of SolutionProperties from the JsonReader.
+     * 
+     * @param jsonReader The JsonReader being read.
+     * @return An instance of SolutionProperties if the JsonReader was pointing to an instance of it, or null if it was
+     * pointing to JSON null.
+     * @throws IOException If an error occurs while reading the SolutionProperties.
+     */
+    @Generated
+    public static SolutionProperties fromJson(JsonReader jsonReader) throws IOException {
+        return jsonReader.readObject(reader -> {
+            SolutionProperties deserializedSolutionProperties = new SolutionProperties();
+            while (reader.nextToken() != JsonToken.END_OBJECT) {
+                String fieldName = reader.getFieldName();
+                reader.nextToken();
+
+                if ("solutionId".equals(fieldName)) {
+                    deserializedSolutionProperties.solutionId = reader.getString();
+                } else if ("title".equals(fieldName)) {
+                    deserializedSolutionProperties.title = reader.getString();
+                } else if ("content".equals(fieldName)) {
+                    deserializedSolutionProperties.content = reader.getString();
+                } else {
+                    reader.skipChildren();
+                }
+            }
+
+            return deserializedSolutionProperties;
+        });
+    }
+}
diff --git a/typespec-tests/src/main/java/azure/core/page/PageAsyncClient.java b/typespec-tests/src/main/java/azure/core/page/PageAsyncClient.java
index ccd87439af..00da9c19a6 100644
--- a/typespec-tests/src/main/java/azure/core/page/PageAsyncClient.java
+++ b/typespec-tests/src/main/java/azure/core/page/PageAsyncClient.java
@@ -205,6 +205,40 @@ public PagedFlux<BinaryData> withParameterizedNextLink(String select, RequestOpt
         return this.serviceClient.withParameterizedNextLinkAsync(select, requestOptions);
     }
 
+    /**
+     * List with relative nextLink URL that requires endpoint resolution.
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     id: int (Required)
+     *     name: String (Required)
+     *     orders (Optional): [
+     *          (Optional){
+     *             id: int (Required)
+     *             userId: int (Required)
+     *             detail: String (Required)
+     *         }
+     *     ]
+     *     etag: String (Required)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return paged collection of User items as paginated response with {@link PagedFlux}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.COLLECTION)
+    public PagedFlux<BinaryData> withRelativeNextLink(RequestOptions requestOptions) {
+        return this.serviceClient.withRelativeNextLinkAsync(requestOptions);
+    }
+
     /**
      * List with Azure.Core.Page&lt;&gt;.
      * 
@@ -400,4 +434,34 @@ public PagedFlux<User> withParameterizedNextLink(String select) {
                 pagedResponse.getContinuationToken(), null));
         });
     }
+
+    /**
+     * List with relative nextLink URL that requires endpoint resolution.
+     * 
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return paged collection of User items as paginated response with {@link PagedFlux}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.COLLECTION)
+    public PagedFlux<User> withRelativeNextLink() {
+        // Generated convenience method for withRelativeNextLink
+        RequestOptions requestOptions = new RequestOptions();
+        PagedFlux<BinaryData> pagedFluxResponse = withRelativeNextLink(requestOptions);
+        return PagedFlux.create(() -> (continuationTokenParam, pageSizeParam) -> {
+            Flux<PagedResponse<BinaryData>> flux = (continuationTokenParam == null)
+                ? pagedFluxResponse.byPage().take(1)
+                : pagedFluxResponse.byPage(continuationTokenParam).take(1);
+            return flux.map(pagedResponse -> new PagedResponseBase<Void, User>(pagedResponse.getRequest(),
+                pagedResponse.getStatusCode(), pagedResponse.getHeaders(),
+                pagedResponse.getValue()
+                    .stream()
+                    .map(protocolMethodData -> protocolMethodData.toObject(User.class))
+                    .collect(Collectors.toList()),
+                pagedResponse.getContinuationToken(), null));
+        });
+    }
 }
diff --git a/typespec-tests/src/main/java/azure/core/page/PageClient.java b/typespec-tests/src/main/java/azure/core/page/PageClient.java
index d92d2dc455..788f6272b2 100644
--- a/typespec-tests/src/main/java/azure/core/page/PageClient.java
+++ b/typespec-tests/src/main/java/azure/core/page/PageClient.java
@@ -201,6 +201,40 @@ public PagedIterable<BinaryData> withParameterizedNextLink(String select, Reques
         return this.serviceClient.withParameterizedNextLink(select, requestOptions);
     }
 
+    /**
+     * List with relative nextLink URL that requires endpoint resolution.
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     id: int (Required)
+     *     name: String (Required)
+     *     orders (Optional): [
+     *          (Optional){
+     *             id: int (Required)
+     *             userId: int (Required)
+     *             detail: String (Required)
+     *         }
+     *     ]
+     *     etag: String (Required)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return paged collection of User items as paginated response with {@link PagedIterable}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.COLLECTION)
+    public PagedIterable<BinaryData> withRelativeNextLink(RequestOptions requestOptions) {
+        return this.serviceClient.withRelativeNextLink(requestOptions);
+    }
+
     /**
      * List with Azure.Core.Page&lt;&gt;.
      * 
@@ -329,4 +363,23 @@ public PagedIterable<User> withParameterizedNextLink(String select) {
         return serviceClient.withParameterizedNextLink(select, requestOptions)
             .mapPage(bodyItemValue -> bodyItemValue.toObject(User.class));
     }
+
+    /**
+     * List with relative nextLink URL that requires endpoint resolution.
+     * 
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return paged collection of User items as paginated response with {@link PagedIterable}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.COLLECTION)
+    public PagedIterable<User> withRelativeNextLink() {
+        // Generated convenience method for withRelativeNextLink
+        RequestOptions requestOptions = new RequestOptions();
+        return serviceClient.withRelativeNextLink(requestOptions)
+            .mapPage(bodyItemValue -> bodyItemValue.toObject(User.class));
+    }
 }
diff --git a/typespec-tests/src/main/java/azure/core/page/implementation/PageClientImpl.java b/typespec-tests/src/main/java/azure/core/page/implementation/PageClientImpl.java
index c870206103..acf4498146 100644
--- a/typespec-tests/src/main/java/azure/core/page/implementation/PageClientImpl.java
+++ b/typespec-tests/src/main/java/azure/core/page/implementation/PageClientImpl.java
@@ -249,6 +249,24 @@ Response<BinaryData> withParameterizedNextLinkSync(@HostParam("endpoint") String
             @QueryParam("select") String select, @HeaderParam("Accept") String accept, RequestOptions requestOptions,
             Context context);
 
+        @Get("/azure/core/page/with-relative-next-link")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Mono<Response<BinaryData>> withRelativeNextLink(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
+
+        @Get("/azure/core/page/with-relative-next-link")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Response<BinaryData> withRelativeNextLinkSync(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
+
         @Get("{nextLink}")
         @ExpectedResponses({ 200 })
         @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
@@ -328,6 +346,26 @@ Mono<Response<BinaryData>> withParameterizedNextLinkNext(
         Response<BinaryData> withParameterizedNextLinkNextSync(
             @PathParam(value = "nextLink", encoded = true) String nextLink, @HostParam("endpoint") String endpoint,
             @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
+
+        @Get("{nextLink}")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Mono<Response<BinaryData>> withRelativeNextLinkNext(
+            @PathParam(value = "nextLink", encoded = true) String nextLink, @HostParam("endpoint") String endpoint,
+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
+
+        @Get("{nextLink}")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Response<BinaryData> withRelativeNextLinkNextSync(
+            @PathParam(value = "nextLink", encoded = true) String nextLink, @HostParam("endpoint") String endpoint,
+            @HeaderParam("Accept") String accept, RequestOptions requestOptions, Context context);
     }
 
     /**
@@ -1055,6 +1093,154 @@ public PagedIterable<BinaryData> withParameterizedNextLink(String select, Reques
             nextLink -> withParameterizedNextLinkNextSinglePage(nextLink, requestOptionsForNextPage));
     }
 
+    /**
+     * List with relative nextLink URL that requires endpoint resolution.
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     id: int (Required)
+     *     name: String (Required)
+     *     orders (Optional): [
+     *          (Optional){
+     *             id: int (Required)
+     *             userId: int (Required)
+     *             detail: String (Required)
+     *         }
+     *     ]
+     *     etag: String (Required)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return paged collection of User items along with {@link PagedResponse} on successful completion of {@link Mono}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    private Mono<PagedResponse<BinaryData>> withRelativeNextLinkSinglePageAsync(RequestOptions requestOptions) {
+        final String accept = "application/json";
+        return FluxUtil
+            .withContext(context -> service.withRelativeNextLink(this.getEndpoint(), accept, requestOptions, context))
+            .map(res -> new PagedResponseBase<>(res.getRequest(), res.getStatusCode(), res.getHeaders(),
+                getValues(res.getValue(), "value"), getNextLink(res.getValue(), "nextLink"), null));
+    }
+
+    /**
+     * List with relative nextLink URL that requires endpoint resolution.
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     id: int (Required)
+     *     name: String (Required)
+     *     orders (Optional): [
+     *          (Optional){
+     *             id: int (Required)
+     *             userId: int (Required)
+     *             detail: String (Required)
+     *         }
+     *     ]
+     *     etag: String (Required)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return paged collection of User items as paginated response with {@link PagedFlux}.
+     */
+    @ServiceMethod(returns = ReturnType.COLLECTION)
+    public PagedFlux<BinaryData> withRelativeNextLinkAsync(RequestOptions requestOptions) {
+        RequestOptions requestOptionsForNextPage = new RequestOptions();
+        requestOptionsForNextPage.setContext(
+            requestOptions != null && requestOptions.getContext() != null ? requestOptions.getContext() : Context.NONE);
+        return new PagedFlux<>(() -> withRelativeNextLinkSinglePageAsync(requestOptions),
+            nextLink -> withRelativeNextLinkNextSinglePageAsync(nextLink, requestOptionsForNextPage));
+    }
+
+    /**
+     * List with relative nextLink URL that requires endpoint resolution.
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     id: int (Required)
+     *     name: String (Required)
+     *     orders (Optional): [
+     *          (Optional){
+     *             id: int (Required)
+     *             userId: int (Required)
+     *             detail: String (Required)
+     *         }
+     *     ]
+     *     etag: String (Required)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return paged collection of User items along with {@link PagedResponse}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    private PagedResponse<BinaryData> withRelativeNextLinkSinglePage(RequestOptions requestOptions) {
+        final String accept = "application/json";
+        Response<BinaryData> res
+            = service.withRelativeNextLinkSync(this.getEndpoint(), accept, requestOptions, Context.NONE);
+        return new PagedResponseBase<>(res.getRequest(), res.getStatusCode(), res.getHeaders(),
+            getValues(res.getValue(), "value"), getNextLink(res.getValue(), "nextLink"), null);
+    }
+
+    /**
+     * List with relative nextLink URL that requires endpoint resolution.
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     id: int (Required)
+     *     name: String (Required)
+     *     orders (Optional): [
+     *          (Optional){
+     *             id: int (Required)
+     *             userId: int (Required)
+     *             detail: String (Required)
+     *         }
+     *     ]
+     *     etag: String (Required)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return paged collection of User items as paginated response with {@link PagedIterable}.
+     */
+    @ServiceMethod(returns = ReturnType.COLLECTION)
+    public PagedIterable<BinaryData> withRelativeNextLink(RequestOptions requestOptions) {
+        RequestOptions requestOptionsForNextPage = new RequestOptions();
+        requestOptionsForNextPage.setContext(
+            requestOptions != null && requestOptions.getContext() != null ? requestOptions.getContext() : Context.NONE);
+        return new PagedIterable<>(() -> withRelativeNextLinkSinglePage(requestOptions),
+            nextLink -> withRelativeNextLinkNextSinglePage(nextLink, requestOptionsForNextPage));
+    }
+
     /**
      * Get the next page of items.
      * <p><strong>Response Body Schema</strong></p>
@@ -1368,6 +1554,84 @@ private PagedResponse<BinaryData> withParameterizedNextLinkNextSinglePage(String
             getValues(res.getValue(), "values"), getNextLink(res.getValue(), "nextLink"), null);
     }
 
+    /**
+     * Get the next page of items.
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     id: int (Required)
+     *     name: String (Required)
+     *     orders (Optional): [
+     *          (Optional){
+     *             id: int (Required)
+     *             userId: int (Required)
+     *             detail: String (Required)
+     *         }
+     *     ]
+     *     etag: String (Required)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param nextLink The URL to get the next list of items.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return paged collection of User items along with {@link PagedResponse} on successful completion of {@link Mono}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    private Mono<PagedResponse<BinaryData>> withRelativeNextLinkNextSinglePageAsync(String nextLink,
+        RequestOptions requestOptions) {
+        final String accept = "application/json";
+        return FluxUtil.withContext(
+            context -> service.withRelativeNextLinkNext(nextLink, this.getEndpoint(), accept, requestOptions, context))
+            .map(res -> new PagedResponseBase<>(res.getRequest(), res.getStatusCode(), res.getHeaders(),
+                getValues(res.getValue(), "value"), getNextLink(res.getValue(), "nextLink"), null));
+    }
+
+    /**
+     * Get the next page of items.
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * {
+     *     id: int (Required)
+     *     name: String (Required)
+     *     orders (Optional): [
+     *          (Optional){
+     *             id: int (Required)
+     *             userId: int (Required)
+     *             detail: String (Required)
+     *         }
+     *     ]
+     *     etag: String (Required)
+     * }
+     * }
+     * </pre>
+     * 
+     * @param nextLink The URL to get the next list of items.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return paged collection of User items along with {@link PagedResponse}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    private PagedResponse<BinaryData> withRelativeNextLinkNextSinglePage(String nextLink,
+        RequestOptions requestOptions) {
+        final String accept = "application/json";
+        Response<BinaryData> res
+            = service.withRelativeNextLinkNextSync(nextLink, this.getEndpoint(), accept, requestOptions, Context.NONE);
+        return new PagedResponseBase<>(res.getRequest(), res.getStatusCode(), res.getHeaders(),
+            getValues(res.getValue(), "value"), getNextLink(res.getValue(), "nextLink"), null);
+    }
+
     private List<BinaryData> getValues(BinaryData binaryData, String path) {
         try {
             Map<?, ?> obj = binaryData.toObject(Map.class);
diff --git a/typespec-tests/src/main/java/specialwords/ExtensibleStringsAsyncClient.java b/typespec-tests/src/main/java/specialwords/ExtensibleStringsAsyncClient.java
new file mode 100644
index 0000000000..b3e4b436a4
--- /dev/null
+++ b/typespec-tests/src/main/java/specialwords/ExtensibleStringsAsyncClient.java
@@ -0,0 +1,96 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+// Code generated by Microsoft (R) TypeSpec Code Generator.
+
+package specialwords;
+
+import com.azure.core.annotation.Generated;
+import com.azure.core.annotation.ReturnType;
+import com.azure.core.annotation.ServiceClient;
+import com.azure.core.annotation.ServiceMethod;
+import com.azure.core.exception.ClientAuthenticationException;
+import com.azure.core.exception.HttpResponseException;
+import com.azure.core.exception.ResourceModifiedException;
+import com.azure.core.exception.ResourceNotFoundException;
+import com.azure.core.http.rest.RequestOptions;
+import com.azure.core.http.rest.Response;
+import com.azure.core.util.BinaryData;
+import com.azure.core.util.FluxUtil;
+import reactor.core.publisher.Mono;
+import specialwords.implementation.ExtensibleStringsImpl;
+
+/**
+ * Initializes a new instance of the asynchronous SpecialWordsClient type.
+ */
+@ServiceClient(builder = SpecialWordsClientBuilder.class, isAsync = true)
+public final class ExtensibleStringsAsyncClient {
+    @Generated
+    private final ExtensibleStringsImpl serviceClient;
+
+    /**
+     * Initializes an instance of ExtensibleStringsAsyncClient class.
+     * 
+     * @param serviceClient the service client implementation.
+     */
+    @Generated
+    ExtensibleStringsAsyncClient(ExtensibleStringsImpl serviceClient) {
+        this.serviceClient = serviceClient;
+    }
+
+    /**
+     * The putExtensibleStringValue operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * @param accept The accept parameter.
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return the response body along with {@link Response} on successful completion of {@link Mono}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Response<BinaryData>> putExtensibleStringValueWithResponse(String accept, BinaryData body,
+        RequestOptions requestOptions) {
+        return this.serviceClient.putExtensibleStringValueWithResponseAsync(accept, body, requestOptions);
+    }
+
+    /**
+     * The putExtensibleStringValue operation.
+     * 
+     * @param accept The accept parameter.
+     * @param body The body parameter.
+     * @throws IllegalArgumentException thrown if parameters fail the validation.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return the response body on successful completion of {@link Mono}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<String> putExtensibleStringValue(String accept, String body) {
+        // Generated convenience method for putExtensibleStringValueWithResponse
+        RequestOptions requestOptions = new RequestOptions();
+        return putExtensibleStringValueWithResponse(accept, BinaryData.fromString(body), requestOptions)
+            .flatMap(FluxUtil::toMono)
+            .map(protocolMethodData -> protocolMethodData.toString());
+    }
+}
diff --git a/typespec-tests/src/main/java/specialwords/ExtensibleStringsClient.java b/typespec-tests/src/main/java/specialwords/ExtensibleStringsClient.java
new file mode 100644
index 0000000000..f42259e1bf
--- /dev/null
+++ b/typespec-tests/src/main/java/specialwords/ExtensibleStringsClient.java
@@ -0,0 +1,93 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+// Code generated by Microsoft (R) TypeSpec Code Generator.
+
+package specialwords;
+
+import com.azure.core.annotation.Generated;
+import com.azure.core.annotation.ReturnType;
+import com.azure.core.annotation.ServiceClient;
+import com.azure.core.annotation.ServiceMethod;
+import com.azure.core.exception.ClientAuthenticationException;
+import com.azure.core.exception.HttpResponseException;
+import com.azure.core.exception.ResourceModifiedException;
+import com.azure.core.exception.ResourceNotFoundException;
+import com.azure.core.http.rest.RequestOptions;
+import com.azure.core.http.rest.Response;
+import com.azure.core.util.BinaryData;
+import specialwords.implementation.ExtensibleStringsImpl;
+
+/**
+ * Initializes a new instance of the synchronous SpecialWordsClient type.
+ */
+@ServiceClient(builder = SpecialWordsClientBuilder.class)
+public final class ExtensibleStringsClient {
+    @Generated
+    private final ExtensibleStringsImpl serviceClient;
+
+    /**
+     * Initializes an instance of ExtensibleStringsClient class.
+     * 
+     * @param serviceClient the service client implementation.
+     */
+    @Generated
+    ExtensibleStringsClient(ExtensibleStringsImpl serviceClient) {
+        this.serviceClient = serviceClient;
+    }
+
+    /**
+     * The putExtensibleStringValue operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * @param accept The accept parameter.
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return the response body along with {@link Response}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Response<BinaryData> putExtensibleStringValueWithResponse(String accept, BinaryData body,
+        RequestOptions requestOptions) {
+        return this.serviceClient.putExtensibleStringValueWithResponse(accept, body, requestOptions);
+    }
+
+    /**
+     * The putExtensibleStringValue operation.
+     * 
+     * @param accept The accept parameter.
+     * @param body The body parameter.
+     * @throws IllegalArgumentException thrown if parameters fail the validation.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return the response.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public String putExtensibleStringValue(String accept, String body) {
+        // Generated convenience method for putExtensibleStringValueWithResponse
+        RequestOptions requestOptions = new RequestOptions();
+        return putExtensibleStringValueWithResponse(accept, BinaryData.fromString(body), requestOptions).getValue()
+            .toString();
+    }
+}
diff --git a/typespec-tests/src/main/java/specialwords/SpecialWordsClientBuilder.java b/typespec-tests/src/main/java/specialwords/SpecialWordsClientBuilder.java
index ea87d109d8..82a041fc2b 100644
--- a/typespec-tests/src/main/java/specialwords/SpecialWordsClientBuilder.java
+++ b/typespec-tests/src/main/java/specialwords/SpecialWordsClientBuilder.java
@@ -46,10 +46,12 @@
         ModelPropertiesClient.class,
         OperationsClient.class,
         ParametersClient.class,
+        ExtensibleStringsClient.class,
         ModelsAsyncClient.class,
         ModelPropertiesAsyncClient.class,
         OperationsAsyncClient.class,
-        ParametersAsyncClient.class })
+        ParametersAsyncClient.class,
+        ExtensibleStringsAsyncClient.class })
 public final class SpecialWordsClientBuilder implements HttpTrait<SpecialWordsClientBuilder>,
     ConfigurationTrait<SpecialWordsClientBuilder>, EndpointTrait<SpecialWordsClientBuilder> {
     @Generated
@@ -312,6 +314,16 @@ public ParametersAsyncClient buildParametersAsyncClient() {
         return new ParametersAsyncClient(buildInnerClient().getParameters());
     }
 
+    /**
+     * Builds an instance of ExtensibleStringsAsyncClient class.
+     * 
+     * @return an instance of ExtensibleStringsAsyncClient.
+     */
+    @Generated
+    public ExtensibleStringsAsyncClient buildExtensibleStringsAsyncClient() {
+        return new ExtensibleStringsAsyncClient(buildInnerClient().getExtensibleStrings());
+    }
+
     /**
      * Builds an instance of ModelsClient class.
      * 
@@ -352,5 +364,15 @@ public ParametersClient buildParametersClient() {
         return new ParametersClient(buildInnerClient().getParameters());
     }
 
+    /**
+     * Builds an instance of ExtensibleStringsClient class.
+     * 
+     * @return an instance of ExtensibleStringsClient.
+     */
+    @Generated
+    public ExtensibleStringsClient buildExtensibleStringsClient() {
+        return new ExtensibleStringsClient(buildInnerClient().getExtensibleStrings());
+    }
+
     private static final ClientLogger LOGGER = new ClientLogger(SpecialWordsClientBuilder.class);
 }
diff --git a/typespec-tests/src/main/java/specialwords/implementation/ExtensibleStringsImpl.java b/typespec-tests/src/main/java/specialwords/implementation/ExtensibleStringsImpl.java
new file mode 100644
index 0000000000..30e9eb7d50
--- /dev/null
+++ b/typespec-tests/src/main/java/specialwords/implementation/ExtensibleStringsImpl.java
@@ -0,0 +1,151 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+// Code generated by Microsoft (R) TypeSpec Code Generator.
+
+package specialwords.implementation;
+
+import com.azure.core.annotation.BodyParam;
+import com.azure.core.annotation.ExpectedResponses;
+import com.azure.core.annotation.HeaderParam;
+import com.azure.core.annotation.Host;
+import com.azure.core.annotation.HostParam;
+import com.azure.core.annotation.Put;
+import com.azure.core.annotation.ReturnType;
+import com.azure.core.annotation.ServiceInterface;
+import com.azure.core.annotation.ServiceMethod;
+import com.azure.core.annotation.UnexpectedResponseExceptionType;
+import com.azure.core.exception.ClientAuthenticationException;
+import com.azure.core.exception.HttpResponseException;
+import com.azure.core.exception.ResourceModifiedException;
+import com.azure.core.exception.ResourceNotFoundException;
+import com.azure.core.http.rest.RequestOptions;
+import com.azure.core.http.rest.Response;
+import com.azure.core.http.rest.RestProxy;
+import com.azure.core.util.BinaryData;
+import com.azure.core.util.Context;
+import com.azure.core.util.FluxUtil;
+import reactor.core.publisher.Mono;
+
+/**
+ * An instance of this class provides access to all the operations defined in ExtensibleStrings.
+ */
+public final class ExtensibleStringsImpl {
+    /**
+     * The proxy service used to perform REST calls.
+     */
+    private final ExtensibleStringsService service;
+
+    /**
+     * The service client containing this operation class.
+     */
+    private final SpecialWordsClientImpl client;
+
+    /**
+     * Initializes an instance of ExtensibleStringsImpl.
+     * 
+     * @param client the instance of the service client containing this operation class.
+     */
+    ExtensibleStringsImpl(SpecialWordsClientImpl client) {
+        this.service
+            = RestProxy.create(ExtensibleStringsService.class, client.getHttpPipeline(), client.getSerializerAdapter());
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for SpecialWordsClientExtensibleStrings to be used by the proxy service
+     * to perform REST calls.
+     */
+    @Host("{endpoint}")
+    @ServiceInterface(name = "SpecialWordsClientExtensibleStrings")
+    public interface ExtensibleStringsService {
+        @Put("/special-words/extensible-strings/string")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Mono<Response<BinaryData>> putExtensibleStringValue(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
+            @BodyParam("text/plain") BinaryData body, RequestOptions requestOptions, Context context);
+
+        @Put("/special-words/extensible-strings/string")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Response<BinaryData> putExtensibleStringValueSync(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
+            @BodyParam("text/plain") BinaryData body, RequestOptions requestOptions, Context context);
+    }
+
+    /**
+     * The putExtensibleStringValue operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * @param accept The accept parameter.
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return the response body along with {@link Response} on successful completion of {@link Mono}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Response<BinaryData>> putExtensibleStringValueWithResponseAsync(String accept, BinaryData body,
+        RequestOptions requestOptions) {
+        final String contentType = "text/plain";
+        return FluxUtil.withContext(context -> service.putExtensibleStringValue(this.client.getEndpoint(), contentType,
+            accept, body, requestOptions, context));
+    }
+
+    /**
+     * The putExtensibleStringValue operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * @param accept The accept parameter.
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return the response body along with {@link Response}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Response<BinaryData> putExtensibleStringValueWithResponse(String accept, BinaryData body,
+        RequestOptions requestOptions) {
+        final String contentType = "text/plain";
+        return service.putExtensibleStringValueSync(this.client.getEndpoint(), contentType, accept, body,
+            requestOptions, Context.NONE);
+    }
+}
diff --git a/typespec-tests/src/main/java/specialwords/implementation/SpecialWordsClientImpl.java b/typespec-tests/src/main/java/specialwords/implementation/SpecialWordsClientImpl.java
index 0228a3a8ef..fe72d94182 100644
--- a/typespec-tests/src/main/java/specialwords/implementation/SpecialWordsClientImpl.java
+++ b/typespec-tests/src/main/java/specialwords/implementation/SpecialWordsClientImpl.java
@@ -113,6 +113,20 @@ public ParametersImpl getParameters() {
         return this.parameters;
     }
 
+    /**
+     * The ExtensibleStringsImpl object to access its operations.
+     */
+    private final ExtensibleStringsImpl extensibleStrings;
+
+    /**
+     * Gets the ExtensibleStringsImpl object to access its operations.
+     * 
+     * @return the ExtensibleStringsImpl object.
+     */
+    public ExtensibleStringsImpl getExtensibleStrings() {
+        return this.extensibleStrings;
+    }
+
     /**
      * Initializes an instance of SpecialWordsClient client.
      * 
@@ -148,5 +162,6 @@ public SpecialWordsClientImpl(HttpPipeline httpPipeline, SerializerAdapter seria
         this.modelProperties = new ModelPropertiesImpl(this);
         this.operations = new OperationsImpl(this);
         this.parameters = new ParametersImpl(this);
+        this.extensibleStrings = new ExtensibleStringsImpl(this);
     }
 }
diff --git a/typespec-tests/src/main/java/tsptest/armstreamstyleserialization/implementation/PrioritiesClientImpl.java b/typespec-tests/src/main/java/tsptest/armstreamstyleserialization/implementation/PrioritiesClientImpl.java
index 4556468423..e7f67aafc2 100644
--- a/typespec-tests/src/main/java/tsptest/armstreamstyleserialization/implementation/PrioritiesClientImpl.java
+++ b/typespec-tests/src/main/java/tsptest/armstreamstyleserialization/implementation/PrioritiesClientImpl.java
@@ -90,7 +90,7 @@ private Mono<Response<Priority>> setPriorityWithResponseAsync(Priority priority)
         if (priority == null) {
             return Mono.error(new IllegalArgumentException("Parameter priority is required and cannot be null."));
         }
-        final String accept = "text/plain";
+        final String accept = "application/json";
         return FluxUtil
             .withContext(context -> service.setPriority(this.client.getEndpoint(), priority, accept, context))
             .contextWrite(context -> context.putAll(FluxUtil.toReactorContext(this.client.getContext()).readOnly()));
@@ -131,7 +131,7 @@ public Response<Priority> setPriorityWithResponse(Priority priority, Context con
             throw LOGGER.atError()
                 .log(new IllegalArgumentException("Parameter priority is required and cannot be null."));
         }
-        final String accept = "text/plain";
+        final String accept = "application/json";
         return service.setPrioritySync(this.client.getEndpoint(), priority, accept, context);
     }
 
diff --git a/typespec-tests/src/main/java/tsptest/enumservice/EnumServiceAsyncClient.java b/typespec-tests/src/main/java/tsptest/enumservice/EnumServiceAsyncClient.java
index 5eb297d5fd..28fd5ff589 100644
--- a/typespec-tests/src/main/java/tsptest/enumservice/EnumServiceAsyncClient.java
+++ b/typespec-tests/src/main/java/tsptest/enumservice/EnumServiceAsyncClient.java
@@ -474,6 +474,38 @@ public Mono<Response<Void>> setStringEnumArrayHeaderWithResponse(List<String> co
         return this.serviceClient.setStringEnumArrayHeaderWithResponseAsync(colorArray, requestOptions);
     }
 
+    /**
+     * The getWrongBody operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return simple string along with {@link Response} on successful completion of {@link Mono}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Response<BinaryData>> getWrongBodyWithResponse(BinaryData body, RequestOptions requestOptions) {
+        return this.serviceClient.getWrongBodyWithResponseAsync(body, requestOptions);
+    }
+
     /**
      * The getColor operation.
      * 
@@ -1042,4 +1074,25 @@ public Mono<Void> setStringEnumArrayHeader(List<ColorModel> colorArray) {
             .map(paramItemValue -> Objects.toString(paramItemValue, ""))
             .collect(Collectors.toList()), requestOptions).flatMap(FluxUtil::toMono);
     }
+
+    /**
+     * The getWrongBody operation.
+     * 
+     * @param body The body parameter.
+     * @throws IllegalArgumentException thrown if parameters fail the validation.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return simple string on successful completion of {@link Mono}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<String> getWrongBody(String body) {
+        // Generated convenience method for getWrongBodyWithResponse
+        RequestOptions requestOptions = new RequestOptions();
+        return getWrongBodyWithResponse(BinaryData.fromString(body), requestOptions).flatMap(FluxUtil::toMono)
+            .map(protocolMethodData -> protocolMethodData.toString());
+    }
 }
diff --git a/typespec-tests/src/main/java/tsptest/enumservice/EnumServiceClient.java b/typespec-tests/src/main/java/tsptest/enumservice/EnumServiceClient.java
index 802a27c880..05e4be7cc2 100644
--- a/typespec-tests/src/main/java/tsptest/enumservice/EnumServiceClient.java
+++ b/typespec-tests/src/main/java/tsptest/enumservice/EnumServiceClient.java
@@ -470,6 +470,38 @@ public Response<Void> setStringEnumArrayHeaderWithResponse(List<String> colorArr
         return this.serviceClient.setStringEnumArrayHeaderWithResponse(colorArray, requestOptions);
     }
 
+    /**
+     * The getWrongBody operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return simple string along with {@link Response}.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Response<BinaryData> getWrongBodyWithResponse(BinaryData body, RequestOptions requestOptions) {
+        return this.serviceClient.getWrongBodyWithResponse(body, requestOptions);
+    }
+
     /**
      * The getColor operation.
      * 
@@ -1015,4 +1047,24 @@ public void setStringEnumArrayHeader(List<ColorModel> colorArray) {
             .map(paramItemValue -> Objects.toString(paramItemValue, ""))
             .collect(Collectors.toList()), requestOptions).getValue();
     }
+
+    /**
+     * The getWrongBody operation.
+     * 
+     * @param body The body parameter.
+     * @throws IllegalArgumentException thrown if parameters fail the validation.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent.
+     * @return simple string.
+     */
+    @Generated
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public String getWrongBody(String body) {
+        // Generated convenience method for getWrongBodyWithResponse
+        RequestOptions requestOptions = new RequestOptions();
+        return getWrongBodyWithResponse(BinaryData.fromString(body), requestOptions).getValue().toString();
+    }
 }
diff --git a/typespec-tests/src/main/java/tsptest/enumservice/implementation/EnumServiceClientImpl.java b/typespec-tests/src/main/java/tsptest/enumservice/implementation/EnumServiceClientImpl.java
index fce35a37c7..14c8d1c04e 100644
--- a/typespec-tests/src/main/java/tsptest/enumservice/implementation/EnumServiceClientImpl.java
+++ b/typespec-tests/src/main/java/tsptest/enumservice/implementation/EnumServiceClientImpl.java
@@ -4,6 +4,7 @@
 
 package tsptest.enumservice.implementation;
 
+import com.azure.core.annotation.BodyParam;
 import com.azure.core.annotation.ExpectedResponses;
 import com.azure.core.annotation.Get;
 import com.azure.core.annotation.HeaderParam;
@@ -415,6 +416,26 @@ Mono<Response<Void>> setStringEnumArrayHeader(@HostParam("endpoint") String endp
         @UnexpectedResponseExceptionType(HttpResponseException.class)
         Response<Void> setStringEnumArrayHeaderSync(@HostParam("endpoint") String endpoint,
             @HeaderParam("color-array") String colorArray, RequestOptions requestOptions, Context context);
+
+        @Post("/enum/operation/wrong-body")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Mono<Response<BinaryData>> getWrongBody(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
+            @BodyParam("text/plain") BinaryData body, RequestOptions requestOptions, Context context);
+
+        @Post("/enum/operation/wrong-body")
+        @ExpectedResponses({ 200 })
+        @UnexpectedResponseExceptionType(value = ClientAuthenticationException.class, code = { 401 })
+        @UnexpectedResponseExceptionType(value = ResourceNotFoundException.class, code = { 404 })
+        @UnexpectedResponseExceptionType(value = ResourceModifiedException.class, code = { 409 })
+        @UnexpectedResponseExceptionType(HttpResponseException.class)
+        Response<BinaryData> getWrongBodySync(@HostParam("endpoint") String endpoint,
+            @HeaderParam("Content-Type") String contentType, @HeaderParam("Accept") String accept,
+            @BodyParam("text/plain") BinaryData body, RequestOptions requestOptions, Context context);
     }
 
     /**
@@ -1317,4 +1338,71 @@ public Response<Void> setStringEnumArrayHeaderWithResponse(List<String> colorArr
         return service.setStringEnumArrayHeaderSync(this.getEndpoint(), colorArrayConverted, requestOptions,
             Context.NONE);
     }
+
+    /**
+     * The getWrongBody operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return simple string along with {@link Response} on successful completion of {@link Mono}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Mono<Response<BinaryData>> getWrongBodyWithResponseAsync(BinaryData body, RequestOptions requestOptions) {
+        final String contentType = "text/plain";
+        final String accept = "text/plain";
+        return FluxUtil.withContext(
+            context -> service.getWrongBody(this.getEndpoint(), contentType, accept, body, requestOptions, context));
+    }
+
+    /**
+     * The getWrongBody operation.
+     * <p><strong>Request Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * <p><strong>Response Body Schema</strong></p>
+     * 
+     * <pre>
+     * {@code
+     * String
+     * }
+     * </pre>
+     * 
+     * @param body The body parameter.
+     * @param requestOptions The options to configure the HTTP request before HTTP client sends it.
+     * @throws HttpResponseException thrown if the request is rejected by server.
+     * @throws ClientAuthenticationException thrown if the request is rejected by server on status code 401.
+     * @throws ResourceNotFoundException thrown if the request is rejected by server on status code 404.
+     * @throws ResourceModifiedException thrown if the request is rejected by server on status code 409.
+     * @return simple string along with {@link Response}.
+     */
+    @ServiceMethod(returns = ReturnType.SINGLE)
+    public Response<BinaryData> getWrongBodyWithResponse(BinaryData body, RequestOptions requestOptions) {
+        final String contentType = "text/plain";
+        final String accept = "text/plain";
+        return service.getWrongBodySync(this.getEndpoint(), contentType, accept, body, requestOptions, Context.NONE);
+    }
 }
diff --git a/typespec-tests/src/main/resources/_specs_-azure-clientgenerator-core-clientinitialization-defaultclient.properties b/typespec-tests/src/main/resources/azure-clientgenerator-core-clientinitialization-defaultclient.properties
similarity index 100%
rename from typespec-tests/src/main/resources/_specs_-azure-clientgenerator-core-clientinitialization-defaultclient.properties
rename to typespec-tests/src/main/resources/azure-clientgenerator-core-clientinitialization-defaultclient.properties
diff --git a/typespec-tests/src/main/resources/_specs_-azure-clientgenerator-core-clientinitialization-individuallyclient.properties b/typespec-tests/src/main/resources/azure-clientgenerator-core-clientinitialization-individuallyclient.properties
similarity index 100%
rename from typespec-tests/src/main/resources/_specs_-azure-clientgenerator-core-clientinitialization-individuallyclient.properties
rename to typespec-tests/src/main/resources/azure-clientgenerator-core-clientinitialization-individuallyclient.properties
diff --git a/typespec-tests/src/main/resources/_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties b/typespec-tests/src/main/resources/azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties
similarity index 100%
rename from typespec-tests/src/main/resources/_specs_-azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties
rename to typespec-tests/src/main/resources/azure-clientgenerator-core-clientinitialization-individuallyparentclient.properties
diff --git a/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/defaultclient/DefaultClientTests.java b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/defaultclient/DefaultClientTests.java
new file mode 100644
index 0000000000..80caba42b5
--- /dev/null
+++ b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/defaultclient/DefaultClientTests.java
@@ -0,0 +1,68 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+package azure.clientgenerator.core.clientinitialization.defaultclient;
+
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.BlobProperties;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.Input;
+import azure.clientgenerator.core.clientinitialization.defaultclient.models.WithBodyRequest;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class DefaultClientTests {
+
+    @Test
+    public void testHeaderParam() {
+        HeaderParamClient headerParamClient = new HeaderParamClientBuilder().name("test-name-value").buildClient();
+
+        headerParamClient.withQuery("test-id");
+        headerParamClient.withBody(new Input("test-name"));
+    }
+
+    @Test
+    public void testMultipleParams() {
+        MultipleParamsClient multipleParamsClient
+            = new MultipleParamsClientBuilder().name("test-name-value").region("us-west").buildClient();
+
+        multipleParamsClient.withQuery("test-id");
+        multipleParamsClient.withBody(new Input("test-name"));
+    }
+
+    @Test
+    public void testMixedParams() {
+        MixedParamsClient mixedParamsClient = new MixedParamsClientBuilder().name("test-name-value").buildClient();
+
+        mixedParamsClient.withQuery("us-west", "test-id");
+        mixedParamsClient.withBody("us-west", new WithBodyRequest("test-name"));
+    }
+
+    @Test
+    public void testPathParam() {
+        PathParamClient pathParamClient = new PathParamClientBuilder().blobName("sample-blob").buildClient();
+
+        pathParamClient.withQuery("text");
+        BlobProperties blobProperties = pathParamClient.getStandalone();
+        Assertions.assertNotNull(blobProperties);
+        Assertions.assertEquals("sample-blob", blobProperties.getName());
+        pathParamClient.deleteStandalone();
+    }
+
+    @Test
+    public void testParamAlias() {
+        ParamAliasClient paramAliasClient = new ParamAliasClientBuilder().blobName("sample-blob").buildClient();
+
+        paramAliasClient.withAliasedName();
+        paramAliasClient.withOriginalName();
+    }
+
+    @Test
+    public void testQueryParam() {
+        QueryParamClient queryParamClient = new QueryParamClientBuilder().blobName("test-blob").buildClient();
+
+        queryParamClient.withQuery("text");
+        BlobProperties blobProperties = queryParamClient.getStandalone();
+        Assertions.assertNotNull(blobProperties);
+        Assertions.assertEquals("test-blob", blobProperties.getName());
+        queryParamClient.deleteStandalone();
+    }
+}
diff --git a/typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/generated/HeaderParamClientTestBase.java b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/defaultclient/generated/HeaderParamClientTestBase.java
similarity index 80%
rename from typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/generated/HeaderParamClientTestBase.java
rename to typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/defaultclient/generated/HeaderParamClientTestBase.java
index 4b0f55cce3..7200a132b6 100644
--- a/typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/defaultclient/generated/HeaderParamClientTestBase.java
+++ b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/defaultclient/generated/HeaderParamClientTestBase.java
@@ -2,24 +2,24 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.generated;
+package azure.clientgenerator.core.clientinitialization.defaultclient.generated;
 
 // The Java test files under 'generated' package are generated for your reference.
 // If you wish to modify these files, please copy them out of the 'generated' package, and modify there.
 // See https://aka.ms/azsdk/dpg/java/tests for guide on adding a test.
 
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.HeaderParamClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.HeaderParamClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.MixedParamsClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.MixedParamsClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.MultipleParamsClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.MultipleParamsClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.ParamAliasClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.ParamAliasClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.PathParamClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.PathParamClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.QueryParamClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.defaultclient.QueryParamClientBuilder;
+import azure.clientgenerator.core.clientinitialization.defaultclient.HeaderParamClient;
+import azure.clientgenerator.core.clientinitialization.defaultclient.HeaderParamClientBuilder;
+import azure.clientgenerator.core.clientinitialization.defaultclient.MixedParamsClient;
+import azure.clientgenerator.core.clientinitialization.defaultclient.MixedParamsClientBuilder;
+import azure.clientgenerator.core.clientinitialization.defaultclient.MultipleParamsClient;
+import azure.clientgenerator.core.clientinitialization.defaultclient.MultipleParamsClientBuilder;
+import azure.clientgenerator.core.clientinitialization.defaultclient.ParamAliasClient;
+import azure.clientgenerator.core.clientinitialization.defaultclient.ParamAliasClientBuilder;
+import azure.clientgenerator.core.clientinitialization.defaultclient.PathParamClient;
+import azure.clientgenerator.core.clientinitialization.defaultclient.PathParamClientBuilder;
+import azure.clientgenerator.core.clientinitialization.defaultclient.QueryParamClient;
+import azure.clientgenerator.core.clientinitialization.defaultclient.QueryParamClientBuilder;
 import com.azure.core.http.policy.HttpLogDetailLevel;
 import com.azure.core.http.policy.HttpLogOptions;
 import com.azure.core.test.TestMode;
diff --git a/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyClientTests.java b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyClientTests.java
new file mode 100644
index 0000000000..02b30166f3
--- /dev/null
+++ b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyclient/IndividuallyClientTests.java
@@ -0,0 +1,74 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+package azure.clientgenerator.core.clientinitialization.individuallyclient;
+
+import azure.clientgenerator.core.clientinitialization.individuallyclient.models.BlobProperties;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class IndividuallyClientTests {
+
+    @Test
+    public void testIndividuallyNestedWithPath() {
+        IndividuallyNestedWithPathClient client
+            = new IndividuallyNestedWithPathClientBuilder().blobName("test-blob").buildClient();
+
+        client.withQuery("text");
+        BlobProperties blobProperties = client.getStandalone();
+        Assertions.assertNotNull(blobProperties);
+        Assertions.assertEquals("test-blob", blobProperties.getName());
+        client.deleteStandalone();
+    }
+
+    @Test
+    public void testIndividuallyNestedWithQuery() {
+        IndividuallyNestedWithQueryClient client
+            = new IndividuallyNestedWithQueryClientBuilder().blobName("test-blob").buildClient();
+
+        client.withQuery("text");
+        BlobProperties blobProperties = client.getStandalone();
+        Assertions.assertNotNull(blobProperties);
+        Assertions.assertEquals("test-blob", blobProperties.getName());
+        client.deleteStandalone();
+    }
+
+    @Test
+    public void testIndividuallyNestedWithHeader() {
+        IndividuallyNestedWithHeaderClient client
+            = new IndividuallyNestedWithHeaderClientBuilder().name("test-name-value").buildClient();
+
+        client.withQuery("text");
+        client.getStandalone();
+        client.deleteStandalone();
+    }
+
+    @Test
+    public void testIndividuallyNestedWithMultiple() {
+        IndividuallyNestedWithMultipleClient client
+            = new IndividuallyNestedWithMultipleClientBuilder().name("test-name-value").region("us-west").buildClient();
+
+        client.withQuery("text");
+        client.getStandalone();
+        client.deleteStandalone();
+    }
+
+    @Test
+    public void testIndividuallyNestedWithMixed() {
+        IndividuallyNestedWithMixedClient client
+            = new IndividuallyNestedWithMixedClientBuilder().name("test-name-value").buildClient();
+
+        client.withQuery("us-west", "text");
+        client.getStandalone("us-west");
+        client.deleteStandalone("us-west");
+    }
+
+    @Test
+    public void testIndividuallyNestedWithParamAlias() {
+        IndividuallyNestedWithParamAliasClient client
+            = new IndividuallyNestedWithParamAliasClientBuilder().blobName("sample-blob").buildClient();
+
+        client.withAliasedName();
+        client.withOriginalName();
+    }
+}
diff --git a/typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/generated/IndividuallyNestedWithPathClientTestBase.java b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyclient/generated/IndividuallyNestedWithPathClientTestBase.java
similarity index 80%
rename from typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/generated/IndividuallyNestedWithPathClientTestBase.java
rename to typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyclient/generated/IndividuallyNestedWithPathClientTestBase.java
index c5add06432..995a5c1423 100644
--- a/typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyclient/generated/IndividuallyNestedWithPathClientTestBase.java
+++ b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyclient/generated/IndividuallyNestedWithPathClientTestBase.java
@@ -2,24 +2,24 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.generated;
+package azure.clientgenerator.core.clientinitialization.individuallyclient.generated;
 
 // The Java test files under 'generated' package are generated for your reference.
 // If you wish to modify these files, please copy them out of the 'generated' package, and modify there.
 // See https://aka.ms/azsdk/dpg/java/tests for guide on adding a test.
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithHeaderClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithHeaderClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithMixedClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithMixedClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithMultipleClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithMultipleClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithParamAliasClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithParamAliasClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithPathClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithPathClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithQueryClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithQueryClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithHeaderClient;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithHeaderClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithMixedClient;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithMixedClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithMultipleClient;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithMultipleClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithParamAliasClient;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithParamAliasClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithPathClient;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithPathClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithQueryClient;
+import azure.clientgenerator.core.clientinitialization.individuallyclient.IndividuallyNestedWithQueryClientBuilder;
 import com.azure.core.http.policy.HttpLogDetailLevel;
 import com.azure.core.http.policy.HttpLogOptions;
 import com.azure.core.test.TestMode;
diff --git a/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientTests.java b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientTests.java
new file mode 100644
index 0000000000..18feb0c542
--- /dev/null
+++ b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/IndividuallyParentClientTests.java
@@ -0,0 +1,76 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient;
+
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.models.BlobProperties;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class IndividuallyParentClientTests {
+
+    private final IndividuallyParentClient parentClient = new IndividuallyParentClientBuilder().buildClient();
+
+    @Test
+    public void testIndividuallyParentNestedWithPath() {
+        IndividuallyParentNestedWithPathClient client
+            = parentClient.getIndividuallyParentNestedWithPathClient("test-blob");
+
+        client.withQuery("text");
+        BlobProperties blobProperties = client.getStandalone();
+        Assertions.assertNotNull(blobProperties);
+        Assertions.assertEquals("test-blob", blobProperties.getName());
+        client.deleteStandalone();
+    }
+
+    @Test
+    public void testIndividuallyParentNestedWithQuery() {
+        IndividuallyParentNestedWithQueryClient client
+            = parentClient.getIndividuallyParentNestedWithQueryClient("test-blob");
+
+        client.withQuery("text");
+        BlobProperties blobProperties = client.getStandalone();
+        Assertions.assertNotNull(blobProperties);
+        Assertions.assertEquals("test-blob", blobProperties.getName());
+        client.deleteStandalone();
+    }
+
+    @Test
+    public void testIndividuallyParentNestedWithHeader() {
+        IndividuallyParentNestedWithHeaderClient client
+            = parentClient.getIndividuallyParentNestedWithHeaderClient("test-name-value");
+
+        client.withQuery("text");
+        client.getStandalone();
+        client.deleteStandalone();
+    }
+
+    @Test
+    public void testIndividuallyParentNestedWithMultiple() {
+        IndividuallyParentNestedWithMultipleClient client
+            = parentClient.getIndividuallyParentNestedWithMultipleClient("test-name-value", "us-west");
+
+        client.withQuery("text");
+        client.getStandalone();
+        client.deleteStandalone();
+    }
+
+    @Test
+    public void testIndividuallyParentNestedWithMixed() {
+        IndividuallyParentNestedWithMixedClient client
+            = parentClient.getIndividuallyParentNestedWithMixedClient("test-name-value");
+
+        client.withQuery("us-west", "text");
+        client.getStandalone("us-west");
+        client.deleteStandalone("us-west");
+    }
+
+    @Test
+    public void testIndividuallyParentNestedWithParamAlias() {
+        IndividuallyParentNestedWithParamAliasClient client
+            = parentClient.getIndividuallyParentNestedWithParamAliasClient("sample-blob");
+
+        client.withAliasedName();
+        client.withOriginalName();
+    }
+}
diff --git a/typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/generated/IndividuallyParentNestedWithPathClientTestBase.java b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/generated/IndividuallyParentNestedWithPathClientTestBase.java
similarity index 78%
rename from typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/generated/IndividuallyParentNestedWithPathClientTestBase.java
rename to typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/generated/IndividuallyParentNestedWithPathClientTestBase.java
index 79eb17cdd8..255296ba8a 100644
--- a/typespec-tests/src/test/java/_specs_/azure/clientgenerator/core/clientinitialization/individuallyparentclient/generated/IndividuallyParentNestedWithPathClientTestBase.java
+++ b/typespec-tests/src/test/java/azure/clientgenerator/core/clientinitialization/individuallyparentclient/generated/IndividuallyParentNestedWithPathClientTestBase.java
@@ -2,26 +2,26 @@
 // Licensed under the MIT License.
 // Code generated by Microsoft (R) TypeSpec Code Generator.
 
-package _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.generated;
+package azure.clientgenerator.core.clientinitialization.individuallyparentclient.generated;
 
 // The Java test files under 'generated' package are generated for your reference.
 // If you wish to modify these files, please copy them out of the 'generated' package, and modify there.
 // See https://aka.ms/azsdk/dpg/java/tests for guide on adding a test.
 
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithHeaderClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithHeaderClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithMixedClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithMixedClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithMultipleClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithMultipleClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithParamAliasClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithParamAliasClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithPathClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithPathClientBuilder;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithQueryClient;
-import _specs_.azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithQueryClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentClient;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithHeaderClient;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithHeaderClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithMixedClient;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithMixedClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithMultipleClient;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithMultipleClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithParamAliasClient;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithParamAliasClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithPathClient;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithPathClientBuilder;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithQueryClient;
+import azure.clientgenerator.core.clientinitialization.individuallyparentclient.IndividuallyParentNestedWithQueryClientBuilder;
 import com.azure.core.http.policy.HttpLogDetailLevel;
 import com.azure.core.http.policy.HttpLogOptions;
 import com.azure.core.test.TestMode;
diff --git a/typespec-tests/src/test/java/azure/resourcemanager/methodsubscriptionid/MethodSubscriptionIdTest.java b/typespec-tests/src/test/java/azure/resourcemanager/methodsubscriptionid/MethodSubscriptionIdTest.java
index af8b611d49..b9b6ec4329 100644
--- a/typespec-tests/src/test/java/azure/resourcemanager/methodsubscriptionid/MethodSubscriptionIdTest.java
+++ b/typespec-tests/src/test/java/azure/resourcemanager/methodsubscriptionid/MethodSubscriptionIdTest.java
@@ -6,6 +6,8 @@
 import azure.resourcemanager.methodsubscriptionid.fluent.models.SubscriptionResource1Inner;
 import azure.resourcemanager.methodsubscriptionid.fluent.models.SubscriptionResource2Inner;
 import azure.resourcemanager.methodsubscriptionid.fluent.models.SubscriptionResourceInner;
+import azure.resourcemanager.methodsubscriptionid.models.Operation;
+import azure.resourcemanager.methodsubscriptionid.models.OperationDisplay;
 import azure.resourcemanager.methodsubscriptionid.models.ResourceGroupResource;
 import azure.resourcemanager.methodsubscriptionid.models.ResourceGroupResourceProperties;
 import azure.resourcemanager.methodsubscriptionid.models.SubscriptionResource;
@@ -15,6 +17,8 @@
 import azure.resourcemanager.methodsubscriptionid.models.SubscriptionResource2Properties;
 import azure.resourcemanager.methodsubscriptionid.models.SubscriptionResourceProperties;
 import com.azure.core.management.Region;
+import java.util.List;
+import java.util.stream.Collectors;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.utils.ArmUtils;
@@ -44,6 +48,23 @@ public class MethodSubscriptionIdTest {
     private final MethodSubscriptionIdManager manager
         = MethodSubscriptionIdManager.authenticate(ArmUtils.createTestHttpPipeline(), ArmUtils.getAzureProfile());
 
+    @Test
+    public void testOperationsList() {
+        List<Operation> operationList = manager.operations().list().stream().collect(Collectors.toList());
+        Assertions.assertFalse(operationList.isEmpty());
+        Assertions.assertEquals(1, operationList.size());
+        Operation operation = operationList.get(0);
+        Assertions.assertNotNull(operation);
+        Assertions.assertEquals("Azure.ResourceManager.MethodSubscriptionId/services/read", operation.name());
+        Assertions.assertFalse(operation.isDataAction());
+        OperationDisplay display = operation.display();
+        Assertions.assertNotNull(display);
+        Assertions.assertEquals("Azure.ResourceManager.MethodSubscriptionId", display.provider());
+        Assertions.assertEquals("services", display.resource());
+        Assertions.assertEquals("Lists services", display.operation());
+        Assertions.assertEquals("Lists registered services", display.description());
+    }
+
     @Test
     public void testTwoSubscriptionResourcesMethodLevelSubscriptionResource1Operations() {
         // Test Scenario 1: Two subscription resources with method-level subscriptionId
diff --git a/typespec-tests/src/test/java/azure/resourcemanager/nonresource/NonResourceTests.java b/typespec-tests/src/test/java/azure/resourcemanager/nonresource/NonResourceTests.java
index e2bd7fd5a2..be9de58af4 100644
--- a/typespec-tests/src/test/java/azure/resourcemanager/nonresource/NonResourceTests.java
+++ b/typespec-tests/src/test/java/azure/resourcemanager/nonresource/NonResourceTests.java
@@ -3,6 +3,8 @@
 
 package azure.resourcemanager.nonresource;
 
+import azure.resourcemanager.nonresource.fluent.models.NonResourceInner;
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.utils.ArmUtils;
@@ -17,6 +19,15 @@ public void testNonResourceGet() {
         manager.nonResourceOperations().get("eastus", "hello");
     }
 
+    @Test
+    public void testNonResourceCreate() {
+        NonResourceInner body = new NonResourceInner().withId("id").withName("hello").withType("nonResource");
+        NonResourceInner result = manager.serviceClient().getNonResourceOperations().create("eastus", "hello", body);
+        Assertions.assertEquals("id", result.id());
+        Assertions.assertEquals("hello", result.name());
+        Assertions.assertEquals("nonResource", result.type());
+    }
+
     @Disabled("It is mistakenly treated as a resource")
     @Test
     public void testNonResourcePut() {
diff --git a/typespec-tests/src/test/java/encode/duration/EncodeDurationTests.java b/typespec-tests/src/test/java/encode/duration/EncodeDurationTests.java
index 04ab3573d8..9313e9e9b6 100644
--- a/typespec-tests/src/test/java/encode/duration/EncodeDurationTests.java
+++ b/typespec-tests/src/test/java/encode/duration/EncodeDurationTests.java
@@ -11,10 +11,12 @@
 import encode.duration.property.models.FloatMillisecondsLargerUnitDurationProperty;
 import encode.duration.property.models.FloatSecondsDurationArrayProperty;
 import encode.duration.property.models.FloatSecondsDurationProperty;
+import encode.duration.property.models.FloatSecondsLargerUnitDurationProperty;
 import encode.duration.property.models.ISO8601DurationProperty;
 import encode.duration.property.models.Int32MillisecondsDurationProperty;
 import encode.duration.property.models.Int32MillisecondsLargerUnitDurationProperty;
 import encode.duration.property.models.Int32SecondsDurationProperty;
+import encode.duration.property.models.Int32SecondsLargerUnitDurationProperty;
 import java.time.Duration;
 import java.util.Arrays;
 import java.util.List;
@@ -43,6 +45,10 @@ public void testQuery() {
 
         queryClient.int32Seconds(SECOND36);
 
+        queryClient.int32SecondsLargerUnit(Duration.ofMinutes(2));
+
+        queryClient.floatSecondsLargerUnit(Duration.ofMinutes(2).plusSeconds(30));
+
         queryClient.iso8601(DAY40);
 
         queryClient.int32SecondsArray(Arrays.asList(SECOND36, Duration.ofSeconds(47)));
@@ -51,12 +57,11 @@ public void testQuery() {
 
         queryClient.int32MillisecondsLargerUnit(Duration.ofMinutes(3));
 
-//        TODO: floatMilliseconds/float64Milliseconds send 35625.0 instead of 35625 as query param
-//        queryClient.floatMilliseconds(MILLIS35625);
-//
-//        queryClient.floatMillisecondsLargerUnit(Duration.ofMinutes(3).plusSeconds(30));
-//
-//        queryClient.float64Milliseconds(MILLIS35625);
+        queryClient.floatMilliseconds(MILLIS35625);
+
+        queryClient.floatMillisecondsLargerUnit(Duration.ofMinutes(3).plusSeconds(30));
+
+        queryClient.float64Milliseconds(MILLIS35625);
 
         queryClient.int32MillisecondsArray(Arrays.asList(MILLIS36000, Duration.ofMillis(47000)));
     }
@@ -71,6 +76,10 @@ public void testHeader() {
 
         headerClient.int32Seconds(SECOND36);
 
+        headerClient.int32SecondsLargerUnit(Duration.ofMinutes(2));
+
+        headerClient.floatSecondsLargerUnit(Duration.ofMinutes(2).plusSeconds(30));
+
         headerClient.iso8601(DAY40);
 
         headerClient.iso8601Array(Arrays.asList(DAY40, Duration.ofDays(50)));
@@ -79,12 +88,11 @@ public void testHeader() {
 
         headerClient.int32MillisecondsLargerUnit(Duration.ofMinutes(3));
 
-//        TODO: floatMilliseconds/float64Milliseconds send 35625.0 instead of 35625 as header value
-//        headerClient.floatMilliseconds(MILLIS35625);
-//
-//        headerClient.floatMillisecondsLargerUnit(Duration.ofMinutes(3).plusSeconds(30));
-//
-//        headerClient.float64Milliseconds(MILLIS35625);
+        headerClient.floatMilliseconds(MILLIS35625);
+
+        headerClient.floatMillisecondsLargerUnit(Duration.ofMinutes(3).plusSeconds(30));
+
+        headerClient.float64Milliseconds(MILLIS35625);
 
         headerClient.int32MillisecondsArray(Arrays.asList(MILLIS36000, Duration.ofMillis(47000)));
     }
@@ -102,6 +110,16 @@ public void testProperty() {
         Assertions.assertEquals(SECOND36,
             propertyClient.int32Seconds(new Int32SecondsDurationProperty(SECOND36)).getValue());
 
+        Assertions.assertEquals(Duration.ofMinutes(2),
+            propertyClient.int32SecondsLargerUnit(new Int32SecondsLargerUnitDurationProperty(Duration.ofMinutes(2)))
+                .getValue());
+
+        Assertions.assertEquals(Duration.ofMinutes(2).plusSeconds(30),
+            propertyClient
+                .floatSecondsLargerUnit(
+                    new FloatSecondsLargerUnitDurationProperty(Duration.ofMinutes(2).plusSeconds(30)))
+                .getValue());
+
         propertyClient.iso8601(new ISO8601DurationProperty(DAY40));
 
         List<Duration> array = Arrays.asList(SECOND35, Duration.ofSeconds(46, 750_000_000));
diff --git a/typespec-tests/src/test/java/specialwords/generated/SpecialWordsClientTestBase.java b/typespec-tests/src/test/java/specialwords/generated/SpecialWordsClientTestBase.java
index 20be242ec4..e1fffa622e 100644
--- a/typespec-tests/src/test/java/specialwords/generated/SpecialWordsClientTestBase.java
+++ b/typespec-tests/src/test/java/specialwords/generated/SpecialWordsClientTestBase.java
@@ -13,6 +13,7 @@
 import com.azure.core.test.TestMode;
 import com.azure.core.test.TestProxyTestBase;
 import com.azure.core.util.Configuration;
+import specialwords.ExtensibleStringsClient;
 import specialwords.ModelPropertiesClient;
 import specialwords.ModelsClient;
 import specialwords.OperationsClient;
@@ -28,6 +29,8 @@ class SpecialWordsClientTestBase extends TestProxyTestBase {
 
     protected ParametersClient parametersClient;
 
+    protected ExtensibleStringsClient extensibleStringsClient;
+
     @Override
     protected void beforeTest() {
         SpecialWordsClientBuilder modelsClientbuilder = new SpecialWordsClientBuilder()
@@ -66,5 +69,14 @@ protected void beforeTest() {
         }
         parametersClient = parametersClientbuilder.buildParametersClient();
 
+        SpecialWordsClientBuilder extensibleStringsClientbuilder = new SpecialWordsClientBuilder()
+            .endpoint(Configuration.getGlobalConfiguration().get("ENDPOINT", "http://localhost:3000"))
+            .httpClient(getHttpClientOrUsePlayback(getHttpClients().findFirst().orElse(null)))
+            .httpLogOptions(new HttpLogOptions().setLogLevel(HttpLogDetailLevel.BASIC));
+        if (getTestMode() == TestMode.RECORD) {
+            extensibleStringsClientbuilder.addPolicy(interceptorManager.getRecordPolicy());
+        }
+        extensibleStringsClient = extensibleStringsClientbuilder.buildExtensibleStringsClient();
+
     }
 }
diff --git a/typespec-tests/tsp/arm-stream-style-serialization.tsp b/typespec-tests/tsp/arm-stream-style-serialization.tsp
index d26c8cf9f3..c7dfd61b3d 100644
--- a/typespec-tests/tsp/arm-stream-style-serialization.tsp
+++ b/typespec-tests/tsp/arm-stream-style-serialization.tsp
@@ -253,6 +253,7 @@ interface Functions {
 interface Priorities {
   @post
   setPriority(@query priority: Priority): {
+    @header("Content-Type") contentType: "application/json";
     @body body: Priority;
   };
 }
diff --git a/typespec-tests/tsp/enum.tsp b/typespec-tests/tsp/enum.tsp
index 989388c862..8545bfbc2b 100644
--- a/typespec-tests/tsp/enum.tsp
+++ b/typespec-tests/tsp/enum.tsp
@@ -202,4 +202,12 @@ interface EnumOp {
     @header
     colorArrayOpt?: ColorModel[],
   ): void;
+
+  // The request and response should be `@header contentType: "application/json", @body body: ColorModel`
+  // The test here is to make sure the generated code still compile pass, even if it is not the expected operation definition.
+  @post
+  @route("operation/wrong-body")
+  getWrongBody(@body body: ColorModelBase): {
+    @body body: ColorModelBase;
+  };
 }