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
* @return the target.
	 */
	public DesignElement getTarget( )
	{
		return target;
	}
	/**
	 * Sets the target element.
	 * 
	 * @param target
	 *            the target element to set.
	 */
	public void setTarget( DesignElement target )
	{
		this.target = target;
	}
	/**
	 * Returns the event type. The following event types are defined:
	 * <ul>
	 * <li>CONTENT_EVENT</li>
	 * <li>ELEMENT_DELETE_EVENT</li>
	 * <li>EXTENDS_EVENT</li>
	 * <li>NAME_EVENT</li>
	 * <li>NAME_SPACE_EVENT</li>
	 * <li>PROPERTY_EVENT</li>
	 * <li>STYLE_EVENT</li>
	 * <li>USER_PROP_EVENT</li>
	 * <li>CUSTOM_MSG_EVENT</li>
	 * <li>EXTENSION_PROPERTY_DEFINITION_EVENT</li>
	 * <li>NOTIFICATION_EVENT</li>