docs: function( notifyRenderer ){
        var cy = this._private.cy;
        var style = cy.style();
        notifyRenderer = notifyRenderer || notifyRenderer === undefined ? true : false;
  
        style.apply( this );
  
        var updatedCompounds = this.updateCompoundBounds();
  
        if( notifyRenderer ){
          this.add( updatedCompounds ).rtrigger('style'); // let renderer know we changed style
        } else {
          this.add( updatedCompounds ).trigger('style'); // just fire the event
        }
        return this; // chaining
      }