How to use the @nestjsx/crud-request.RequestQueryBuilder.getOptions function in @nestjsx/crud-request

static getQueryParamsNames() {
    const qbOptions = RequestQueryBuilder.getOptions();
    const name = (n) => {
      const selected = qbOptions.paramNamesMap[n];
      return isString(selected) ? selected : selected[0];
    };

    return {
      delim: qbOptions.delim,
      delimStr: qbOptions.delimStr,
      fields: name('fields'),
      search: name('search'),
      filter: name('filter'),
      or: name('or'),
      join: name('join'),
      sort: name('sort'),
      limit: name('limit'),
      offset: name('offset'),