docs: function ListKeys(options, callback) {
      CommandBase.call(this, 'TsListKeysReq', 'TsListKeysResp', callback);
      this.validateOptions(options, schema);
      if (!this.options.stream) {
          this.keys = [];
      }
      if (!this.options.allowListing) {
          throw errors.ListError();
      }
  }