@Override
  protected @Nullable ArrayList<AnAction> createActions(boolean fromPopup) {
    final ArrayList<AnAction> result = new ArrayList<>();
    result.add(new DumbAwareAction(
      JsonBundle.messagePointer("action.DumbAware.JsonSchemaMappingsConfigurable.text.add"),
      JsonBundle.messagePointer("action.DumbAware.JsonSchemaMappingsConfigurable.description.add"),
      IconUtil.getAddIcon()) {
      {
        registerCustomShortcutSet(CommonShortcuts.getInsert(), myTree);
      }
      @Override
      public void actionPerformed(@NotNull AnActionEvent e) {
        addProjectSchema();
      }
    });
    result.add(new MyDeleteAction());
    return result;
  }
@Override
  protected @Nullable ArrayList<AnAction> createActions(boolean fromPopup)