code: function _createImageView(file, pane) {
          var view = pane.getViewForPath(file.fullPath);
  
          if (view) {
              pane.showView(view);
          } else {
              view = new ImageView(file, pane.$content);
              pane.addView(view, true);
          }
          return new $.Deferred().resolve().promise();
      }
docs: /*
  Creates an image view object and adds it to the specified pane
  @param {!File} file - the file to create an image of
  @param {!Pane} pane - the pane in which to host the view
  @return {jQuery.Promise}