Bug 184762 BIRT Model - Enhancments to the level defintion
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/elements/ElementVisitor.java
public void visitContents( Module module, ContainerContext context )
	{
		List contents = context.getContents( module );
		Iterator iter = contents.iterator( );
		while ( iter.hasNext( ) )
			( (DesignElement) iter.next( ) ).apply( this );
	}
	/**
	 * Visits the extended data source.
	 * 
	 * @param obj
	 *            the element to traverse
	 */
	public void visitOdaDataSource( OdaDataSource obj )
	{
		visitDataSource( obj );
	}
	/**
	 * Visits the extended data set.
	 * 
	 * @param obj
	 *            the element to traverse
	 */
	public void visitOdaDataSet( OdaDataSet obj )
	{
		visitSimpleDataSet( obj );
	}
	/**
	 * Visits the module.
	 *