@Override
    public @NonNls String toString() {
      return "StubIndexReference{" +
             "myVirtualFile=" + myVirtualFile +
             ", myProject=" + myProject +
             ", myIndex=" + myIndex +
             ", myLanguage=" + myLanguage +
             ", myElementType=" + myElementType +
             '}';
    }
@Override
    public @NonNls String toString()