@Override
  public void visitPySlashParameter(@NotNull PySlashParameter node) {
    super.visitPySlashParameter(node);

    registerForAllMatchingVersions(level -> level.isOlderThan(LanguageLevel.PYTHON38) && registerForLanguageLevel(level),
                                   PyPsiBundle.message("INSP.compatibility.feature.support.positional.only.parameters"),
                                   node);
  }
@Override
  public void visitPySlashParameter(@NotNull PySlashParameter node)