Can't @Override method with generic argument type in parameterized subclass

class Base<T> {
  void foo(T t) {}
}

class Derived extends Base<String> {
  @Override
  void foo(String s) {}
}

Error:(2, 3) Groovyc: Method 'foo' from class 'Derived' does not override method from its superclass or interfaces but is annotated with @Override.