docs: function (args) {
              var addedSeparators, newSeparators = this._separators;
              if (this._typeUtil.isString(args)) {
                  addedSeparators = [args];
              } else if (this._typeUtil.isArray(args)) {
                  addedSeparators = args;
              } else {
                  return;
              }
              for (var i = 0, len = addedSeparators.length; i < len; i++) {
                  if (!(ariaUtilsArray.contains(this._separators, addedSeparators[i]))) {
                      newSeparators.push(addedSeparators[i]);
                  }
              }
              this.setSeparators(newSeparators);
          }