Like this

```
((Type.ClassType) typeElement.getSuperclass()).asElement().baseSymbol();
((Symbol.ClassSymbol) typeElement).baseSymbol();
//((Type.ClassType) typeElement.getSuperclass()).asElement().getEnclosedElements().get(2);
((Type.ClassType) typeElement.getSuperclass()).asElement().getEnclosedElements().get(8);
//mirrorToElement(typeElement.getSuperclass());
Type type = (Type) typeElement.asType();
//Symbol symbol = ((Type.ClassType) typeElement.getSuperclass()).asElement().getEnclosedElements().get(2);
Symbol symbol = ((Type.ClassType) typeElement.getSuperclass()).asElement().getEnclosedElements().get(8);
//new Types(((JavacProcessingEnvironment) processingEnv).getContext()).memberType(type, symbol);

((JavacTypes) processingEnv.getTypeUtils()).types.memberType(type, symbol).getReturnType();
//((Type.ClassType) typeElement.getSuperclass()).asElement().getEnclosedElements()
```