code: function(el) {
              var self = this;
  
              self.callActions('beforeCacheDom', arguments);
  
              self.dom.el = el;
  
              self.callActions('afterCacheDom', arguments);
          }
docs: Caches references of DOM elements neccessary for the target's functionality.
  
  @private
  @instance
  @since   3.0.0
  @param   {Element} el
  @return  {void}