code: function(elem) {
  			elem = $(elem);
  			if (!elem.hasClass(this._getMarker())) {
  				return;
  			}
  			this._preDestroy(elem, this._getInst(elem));
  			elem.removeData(this.name).removeClass(this._getMarker());
  		}
docs: Remove all trace of the plugin.
  Override <code>_preDestroy</code> for plugin-specific processing.
  @param elem {Element} The source element.
  @example $(selector).plugin('destroy')