@Nullable
  private static GrAnnotationArgumentList findAnchor(@NotNull final Editor editor, @NotNull final PsiFile file) {
    PsiElement element = file.findElementAt(editor.getCaretModel().getOffset());
    if (element == null) return null;

    return PsiTreeUtil.getParentOfType(element, GrAnnotationArgumentList.class);
  }
@Nullable
  private static GrAnnotationArgumentList findAnchor(@NotNull final Editor editor, @NotNull final PsiFile file)