@Nullable
  @Override
  protected CallerChooserBase<PsiMethod> createCallerChooser(String title, Tree treeToReuse, Consumer<? super Set<PsiMethod>> callback) {
    return null; //todo next iteration
  }
@Nullable
  @Override
  protected CallerChooserBase<PsiMethod> createCallerChooser(String title, Tree treeToReuse, Consumer<? super Set<PsiMethod>> callback)