[content assist] Anonymous inner class has wrong type parameters

[jubax]

Original issue: https://bugs.eclipse.org/bugs/show_bug.cgi?id=572825

If I have

public class MyMap<K, V> implements Map<K, V> {

  @Override
  public Set<K> keySet() {
    return new Set<== Content assist trigger
  }
}

and want to create an anonymous set in keySet() then content assist creates

return new Set<MyMap.K>() {
};

The MyMap.K is incorrect. Content assist should generate

return new Set<K>() {
};

Note that the quick fix suggests changing MyMap.K to K.

This bug still shows up with Eclipse 4.33 (2024-09).