docs: function() {
                      var el = this.element[0],
                          bindings = this._bindings;
                      if (bindings) {
                          each(bindings.user || [], function(value) {
                              value(el);
                          });
                          each(bindings.control || {}, function(value) {
                              value(el);
                          });
                      }
                      // Adds bindings.
                      this._bindings = {
                          user: [],
                          control: {}
                      };
                  }