IDEA-67625 Dynamic properties and methods have Object type instead of unresolved ones

plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/synthetic/GrDynamicImplicitMethod.java

@@ -143,11 +143,11 @@ public class GrDynamicImplicitMethod extends LightElement implements PsiMethod,
   }
 
   public PsiType getReturnType() {
-    final PsiType typeElement = myMethod.getReturnType();
-    if (typeElement == null) {
+    final PsiType type = myMethod.getReturnType();
+    if (type == null || type instanceof PsiClassType && ((PsiClassType)type).resolve() == null) {
       return TypesUtil.getJavaLangObject(myMethod);
     }
-    return typeElement;
+    return type;
   }
 
   public PsiTypeElement getReturnTypeElement() {

plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/synthetic/GrDynamicImplicitProperty.java

@@ -192,4 +192,14 @@ public class GrDynamicImplicitProperty extends GrImplicitVariableImpl implements
   public void setInitializer(@Nullable PsiExpression initializer) throws IncorrectOperationException {
     throw new IncorrectOperationException();
   }
+
+  @NotNull
+  @Override
+  public PsiType getType() {
+    PsiType type = super.getType();
+    if (type instanceof PsiClassType && ((PsiClassType)type).resolve() == null) {
+      return PsiType.getJavaLangObject(myManager, getResolveScope());
+    }
+    return type;
+  }
 }