Bug 199640 view in PDF error
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableGroupLM.java
while ( iter.hasNext( ) )
			{
				row = (RowArea) iter.next( );
				
				addArea( row, false, pageBreakAvoid );
				tableLM.addRow( row, true, false );
				count++;
			}
			repeatCount += count;
		}
		tableLM.getContent( ).setExtension( IContent.LAYOUT_EXTENSION, null );
		needRepeat = false;
	}
	
	protected int getGroupLevel()
	{
		if(content!=null && content instanceof IGroupContent)
		{
			return ((IGroupContent)content).getGroupLevel( );
		}
		return 0;
	}
	
	protected void repeatHeader( )
	{
		repeat( );
		skipCachedRow( );
	}
	protected IReportItemExecutor createExecutor( )
	{