code: function () {
              this.close();
              this.container.removeClass("select2-container-active");
              this.dropdown.removeClass("select2-drop-active");
              // synonymous to .is(':focus'), which is available in jquery >= 1.6
              if (this.search[0] === document.activeElement) { this.search.blur(); }
              this.clearSearch();
              this.selection.find(".select2-search-choice-focus").removeClass("select2-search-choice-focus");
          }
docs: abstract