Add KCallable.returnType

core/runtime.jvm/src/kotlin/jvm/internal/CallableReference.java

@@ -20,6 +20,7 @@ import kotlin.jvm.KotlinReflectionNotSupportedError;
 import kotlin.reflect.KCallable;
 import kotlin.reflect.KDeclarationContainer;
 import kotlin.reflect.KParameter;
+import kotlin.reflect.KType;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
@@ -69,6 +70,11 @@ public abstract class CallableReference implements KCallable {
         throw error();
     }
 
+    @Override
+    public KType getReturnType() {
+        throw error();
+    }
+
     @Override
     public Object call(@NotNull Object... args) {
         throw error();

core/runtime.jvm/src/kotlin/jvm/internal/FunctionReference.java

@@ -66,6 +66,11 @@ public class FunctionReference
         throw error();
     }
 
+    @Override
+    public KType getReturnType() {
+        throw error();
+    }
+
     @Override
     public Object call(@NotNull Object... args) {
         throw error();