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
apply( parameters.get( n ) );
			if ( currentElement != null )
			{
				paramGroup.addParameter( (IParameterDefnBase) currentElement );
			}
		}
		currentElement = paramGroup;
	}
	public void visitCascadingParameterGroup(
			CascadingParameterGroupHandle handle )
	{
		CascadingParameterGroupDefn paramGroup = new CascadingParameterGroupDefn( );
		paramGroup.setHandle( handle );
		paramGroup
				.setParameterType( IParameterDefnBase.CASCADING_PARAMETER_GROUP );
		paramGroup.setName( handle.getName( ) );
		paramGroup.setDisplayName( handle.getDisplayName( ) );
		paramGroup.setDisplayNameKey( handle.getDisplayNameKey( ) );
		paramGroup.setHelpText( handle.getHelpText( ) );
		paramGroup.setHelpTextKey( handle.getHelpTextKey( ) );
		DataSetHandle dset = handle.getDataSet( );
		if ( dset != null )
		{
			paramGroup.setDataSet( dset.getName( ) );
		}
		SlotHandle parameters = handle.getParameters( );
		
		List properties = handle.getUserProperties( );
		for ( int i = 0; i < properties.size( ); i++ )
		{