@Override
  public boolean isEquivalentTo(PsiElement another) {
    return another instanceof GrDynamicPropertyImpl &&
           myManager.areElementsEquivalent(myField, ((GrDynamicPropertyImpl)another).myField) &&
           myManager.areElementsEquivalent(myContainingClass, ((GrDynamicPropertyImpl)another).myContainingClass);
  }
@Override
  public boolean isEquivalentTo(PsiElement another)