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 data set to traverse
	 */
	public void visitSimpleDataSet( SimpleDataSet obj )
	{
		visitDataSet( obj );
	}
	/**
	 * Visits the script data set element.
	 * 
	 * @param obj
	 *            the script data set to traverse
	 */
	public void visitScriptDataSet( ScriptDataSet obj )
	{
		visitSimpleDataSet( obj );
	}
	/**
	 * Visits the data source element.
	 * 
	 * @param obj
	 *            the data source to traverse
	 */
	public void visitDataSource( DataSource obj )
	{
		visitDesignElement( obj );
	}
	/**
	 * Visits the script data source element.
	 * 
	 * @param obj