Bug 176450 Support link to CSS Feature(Model Part)
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/activity/NotificationEvent.java
*            the delivery path to set.
	 */
	public void setDeliveryPath( int path )
	{
		deliveryPath = path;
	}
	/**
	 * Returns the sender: the UI or other application object that caused the
	 * event to be sent. The UI component can use this to avoid responding to
	 * changes that the UI component itself caused.
	 * 
	 * @return the sender.
	 */
	public Object getSender( )
	{
		return sender;
	}
	/**
	 * Sets the sender based on the information provided to the command.
	 * 
	 * @param sender
	 *            the sender to set.
	 */
	public void setSender( Object sender )
	{
		this.sender = sender;
	}
	/**
	 * Returns the target element: the part of the design that actually changed.
	 *