Feature/provider updates

providers/src/googleapis.com/v00.00.00000/services/aiplatform.yaml

@@ -14,7 +14,22 @@ info:
 externalDocs:
   url: https://cloud.google.com/vertex-ai/
 servers:
+  - url: https://{ai_platform_region}-aiplatform.googleapis.com
+    description: Regional endpoint for Vertex AI (required for Matching Engine and similar services)
+    variables:
+      ai_platform_region:
+        default: us-central1
+        enum:
+          - us-central1
+          - europe-west4
+          - asia-east1
+          - asia-northeast1
+          - us-west1
+        description: |
+          The region where Vertex AI Matching Engine and related services are hosted.
+          Must be a region that supports Matching Engine.
   - url: https://aiplatform.googleapis.com
+    description: Global endpoint for general Vertex AI APIs (model registry, training, etc.)
 components:
   securitySchemes:
     Oauth2: