code: function(id) {
              // If the edit filename feature is enabled, mark the filename element as "editable" and the associated edit icon
              if (this._isEditFilenameEnabled()) {
                  this._templating.markFilenameEditable(id);
                  this._templating.showEditIcon(id);
  
                  // If the focusin event is not supported, we must add a focus handler to the newly create edit filename text input
                  if (!this._focusinEventSupported) {
                      this._filenameInputFocusHandler.addHandler(this._templating.getEditInput(id));
                  }
              }
          }
docs: The file item has been added to the DOM.