code: function( name, event ) {
  		if( event instanceof lm.utils.BubblingEvent &&
  			event.isPropagationStopped === false &&
  			this.isInitialised === true ) {
  			
  			/**
  			 * In some cases (e.g. if an element is created from a DragSource) it
  			 * doesn't have a parent and is not below root. If that's the case
  			 * propagate the bubbling event from the top level of the substree directly
  			 * to the layoutManager
  			 */
  			if( this.isRoot === false && this.parent ) {
  				this.parent.emit.apply( this.parent, Array.prototype.slice.call( arguments, 0 ) );
  			} else {
  				this._scheduleEventPropagationToLayoutManager( name, event );
  			}
  		}
  	}
docs: Called for every event on the item tree. Decides whether the event is a bubbling
  event and propagates it to its parent
  
  @param	{String} name the name of the event
  @param   {lm.utils.BubblingEvent} event
  
  @returns {void}