Bug 184762 BIRT Model - Enhancments to the level defintion
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/elements/ElementVisitor.java
*            the group element to traverse
	 */
	public void visitGroup( GroupElement obj )
	{
	}
	/**
	 * Visits the list group element.
	 * 
	 * @param obj
	 *            the list group to traverse
	 */
	public void visitListGroup( ListGroup obj )
	{
		visitGroup( obj );
	}
	/**
	 * Visits the table item element.
	 * 
	 * @param obj
	 *            the table item to traverse
	 */
	public void visitTable( TableItem obj )
	{
		visitListing( obj );
	}
	/**
	 * Visits the table group element.
	 * 
	 * @param obj
	 *            the table group to traverse