Bug 129144 Support suppressDuplicates property on table row in report engine
See 129143 for detail. This only needs to be supported for data item in a detail row of a table.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/parser/EngineIRVisitor.java
band.addRow( (RowDesign) currentElement );
			}
		}
		return band;
	}
	/**
	 * Creates the property visibility
	 * 
	 * @param visibilityRulesIterator
	 *            the handle's rules iterator
	 * @return null only if the iterator is null or it contains no rules,
	 *         otherwise VisibilityDesign
	 */
	protected VisibilityDesign createVisibility(
			Iterator visibilityRulesIterator )
	{
		if ( visibilityRulesIterator != null )
		{
			VisibilityDesign visibility = new VisibilityDesign( );
			while ( visibilityRulesIterator.hasNext( ) )
			{
				VisibilityRuleDesign hide = createHide( (HideRuleHandle) visibilityRulesIterator
						.next( ) );
				visibility.addRule( hide );
			}
			if ( visibility.count( ) == 0 )
			{
				return null;
			}
			return visibility;