diff --git a/infra/axiom/src/main/java/com/evolveum/axiom/api/meta/Inheritance.java b/infra/axiom/src/main/java/com/evolveum/axiom/api/meta/Inheritance.java
new file mode 100644
index 00000000000..ffb44ca0606
--- /dev/null
+++ b/infra/axiom/src/main/java/com/evolveum/axiom/api/meta/Inheritance.java
@@ -0,0 +1,35 @@
+package com.evolveum.axiom.api.meta;
+
+import com.evolveum.axiom.api.AxiomIdentifier;
+import com.evolveum.axiom.lang.api.AxiomItemDefinition;
+
+public interface Inheritance {
+
+    Inheritance INHERIT = Inheritance::inheritNamespace;
+    Inheritance NO_CHANGE = Inheritance::noChange;
+    Inheritance NO_NAMESPACE = Inheritance::noNamespace;
+    Inheritance CURRENT = NO_CHANGE;
+
+
+    static AxiomIdentifier adapt(AxiomIdentifier parent, AxiomIdentifier child) {
+        return CURRENT.apply(parent, child);
+    }
+
+    static AxiomIdentifier adapt(AxiomIdentifier parent, AxiomItemDefinition child) {
+        return child.inherited() ? adapt(parent, child.name()) : child.name();
+    }
+
+    AxiomIdentifier apply(AxiomIdentifier parent, AxiomIdentifier child);
+
+    static AxiomIdentifier inheritNamespace(AxiomIdentifier parent, AxiomIdentifier name) {
+        return parent.localName(name.localName());
+    }
+
+    static AxiomIdentifier noNamespace(AxiomIdentifier parent, AxiomIdentifier name) {
+        return name.defaultNamespace();
+    }
+
+    static AxiomIdentifier noChange(AxiomIdentifier parent, AxiomIdentifier name) {
+        return name;
+    }
+}
diff --git a/infra/axiom/src/test/java/com/evolveum/axiom/lang/test/TestAxiomExtension.java b/infra/axiom/src/test/java/com/evolveum/axiom/lang/test/TestAxiomExtension.java
index 9125c157dc5..b7b828113f0 100644
--- a/infra/axiom/src/test/java/com/evolveum/axiom/lang/test/TestAxiomExtension.java
+++ b/infra/axiom/src/test/java/com/evolveum/axiom/lang/test/TestAxiomExtension.java
@@ -81,11 +81,9 @@ public void axiomTestLanguageExtension() throws IOException, AxiomSyntaxExceptio
         AxiomTypeDefinition typeDef = schemaContext.getType(Type.TYPE_DEFINITION.name()).get();
         assertNotNull(typeDef.itemDefinition(STORAGE).get());
 
-
         ModelReactorContext extendedLanguage = ModelReactorContext.reactor(schemaContext);
         extendedLanguage.loadModelFromSource(source(LANG_EXT));
         extendedLanguage.loadModelFromSource(source(LANG_EXT_USE));
-
         schemaContext = extendedLanguage.computeSchemaContext();
 
         AxiomTypeDefinition langExtDef = schemaContext.getType(Type.EXTENSION_DEFINITION.name()).get();
@@ -95,8 +93,8 @@ public void axiomTestLanguageExtension() throws IOException, AxiomSyntaxExceptio
         assertTrue(personDef.isPresent());
 
         AxiomItem<Object> extension = personDef.get().item(STORAGE).get();
-        assertFalse(extension.values().isEmpty(), "Extension statements should be available.");
 
+        assertFalse(extension.values().isEmpty(), "Extension statements should be available.");
         assertEquals(2, personDef.get().itemDefinitions().entrySet().size());
     }
 
diff --git a/infra/axiom/src/test/resources/prism/common-core.axiom b/infra/axiom/src/test/resources/prism/common-core.axiom
index 83b95e6c0b4..91e4d698f41 100644
--- a/infra/axiom/src/test/resources/prism/common-core.axiom
+++ b/infra/axiom/src/test/resources/prism/common-core.axiom
@@ -885,15 +885,15 @@ model common-core {
 
     // Example of short version of container definition.
     prism:container {
-            name Assignment;
-            itemName assignment;
+        name Assignment;
+        itemName assignment;
 
-            // item description; // TODO make this work
-            // item documentation; // TODO make this work
-            // item extension; // TODO make this work
+        // item description; // TODO make this work
+        // item documentation; // TODO make this work
+        // item extension; // TODO make this work
 
-            // ...
-        }
+        // ...
+    }
 
     prism:container {
         name Extension;
diff --git a/infra/axiom/src/test/resources/prism/common-core.prism b/infra/axiom/src/test/resources/prism/common-core.prism
index 031e94abd26..1dba7175fab 100644
--- a/infra/axiom/src/test/resources/prism/common-core.prism
+++ b/infra/axiom/src/test/resources/prism/common-core.prism
@@ -10,7 +10,7 @@ prism:model common-core {
 
     namespace "http://midpoint.evolveum.com/xml/ns/public/common/common-3";
     version "3.0.0";
-    
+
     import prism {
         namespace "http://midpoint.evolveum.com/xml/ns/public/common/prism";
     }
@@ -861,7 +861,7 @@ prism:model common-core {
         }
     }
 
-    mixin Documentation { 
+    mixin Documentation { 
         item documentation {
             type string;
             documentation """
diff --git a/infra/axiom/src/test/resources/prism/prism.axiom b/infra/axiom/src/test/resources/prism/prism.axiom
index 690fd745a7f..1de7e6a2088 100644
--- a/infra/axiom/src/test/resources/prism/prism.axiom
+++ b/infra/axiom/src/test/resources/prism/prism.axiom
@@ -12,7 +12,7 @@ model prism {
 
     extension PrismModelExtension {
       target axiom:AxiomModel;
-      
+
       item object {
           type PrismObjectDefinition;
       }
@@ -28,6 +28,9 @@ model prism {
 
     type PrismModel {
         extends axiom:AxiomModel;
+        item type { // {}:type
+          type PrismTypeDefinition;
+        }
     }
 
     extension PrismTypeDefinitionAnnotation {