Add FirScope::getCallableNames function

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/enhancement/SignatureEnhancement.kt

@@ -55,6 +55,28 @@ class FirSignatureEnhancement(
         FirJavaEnhancementContext(session) { null }.copyWithNewDefaultTypeQualifiers(typeQualifierResolver, jsr305State, owner.annotations)
 
     private val enhancements = mutableMapOf<FirCallableSymbol<*>, FirCallableSymbol<*>>()
+    private val overriddenFunctions = mutableMapOf<FirFunctionSymbol<*>, Collection<FirFunctionSymbol<*>>>()
+
+    override fun processPropertiesByName(name: Name, processor: (FirVariableSymbol<*>) -> Unit) {
+        useSiteMemberScope.processPropertiesByName(name) process@{ original ->
+
+            val field = enhancements.getOrPut(original) { enhance(original, name) }
+            processor(field as FirVariableSymbol<*>)
+        }
+
+        return super.processPropertiesByName(name, processor)
+    }
+
+    override fun getCallableNames(): Set<Name> {
+        return useSiteMemberScope.getCallableNames() + super.getCallableNames()
+    }
+
+    override fun processFunctionsByName(name: Name, processor: (FirFunctionSymbol<*>) -> Unit) {
+        useSiteMemberScope.processFunctionsByName(name) process@{ original ->
+
+            val function = enhancements.getOrPut(original) { enhance(original, name) }
+            processor(function as FirFunctionSymbol<*>)
+        }
 
     fun enhancedFunction(
         function: FirFunctionSymbol<*>,

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/scopes/JavaClassUseSiteMemberScope.kt

@@ -45,6 +45,10 @@ class JavaClassUseSiteMemberScope(
         }
     }
 
+    override fun getCallableNames(): Set<Name> {
+        return declaredMemberScope.getCallableNames() + superTypesScope.getCallableNames()
+    }
+
     private fun generateAccessorSymbol(
         functionSymbol: FirFunctionSymbol<*>,
         syntheticPropertyName: Name,