docs: function (p) {
              var src = ariaWidgetsFormDropDownTrait.prototype;
              for (var key in src) {
                  if (src.hasOwnProperty(key) && !p.hasOwnProperty(key)) {
                      // import methods from DropDownTrait which are not already on this object (this avoids copying
                      // $classpath and $destructor)
                      p[key] = src[key];
                  }
              }
          }