code: function (anotherTarget) {
              var self = this, targets = self.getTargets();
              if (!util.inArray(anotherTarget, targets)) {
                  targets.push(anotherTarget);
              }
              return self;
          }
docs: Registers another EventTarget as a bubble target.
  @method addTarget
  @param {KISSY.Event.CustomEvent.Target} anotherTarget Another EventTarget instance to add
  @chainable