Bug 118750 Insert group for table from library, system throws exception.
Insert group for table from library, system throws exception. Steps: 1.Insert a tabel from library 2.Insert group Actual Results: 1.System throws exception A Birt exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:1.0.1 Error Code:Error.ContentException.STRUCTURE_CHANGE_FORBIDDEN Error Message:Element "report.Body[1]" is child element or a virtual element( inside the child ), can not change its structure. Expected Results: 1.Can be inserted group
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/actions/InsertGroupActionFactory.java
*/
	public void run( )
	{
		if ( Policy.TRACING_ACTIONS )
		{
			System.out.println( "Insert group action >> Run ..." ); 
		}
		CommandStack stack = getActiveCommandStack( );
		stack.startTrans( STACK_MSG_ADD_GROUP );
		boolean retValue = false;
		if ( getTableEditPart( ) != null )
		{
			retValue = getTableEditPart( ).insertGroup( getPosition( ) );
		}
		else
		{
			retValue = getListEditPart( ).insertGroup( getPosition( ) );
		}
		if ( retValue )
		{
			stack.commit( );
		}
		else
		{
			stack.rollbackAll( );
		}
	}
	protected boolean isGroup( )
	{
		if ( getRowHandle( ) != null )