code: function (start, end) {
              if (!this._hasFocus) {
                  return;
              }
  
              var ctrl = this.getTextInputField();
              ariaUtilsCaret.setPosition(ctrl, start, end);
          }
docs: Set the caret position in the field
  @param {Number} start The starting caret position
  @param {Number} end The ending caret position