if ( report.getSlot( ReportDesign.PAGE_SLOT ).getCount( ) == 0 )
if ( report.getSlot( IModuleModel.PAGE_SLOT ).getCount( ) == 0 )
	public List validate( Module module, DesignElement element )	{		if ( !( element instanceof ReportDesign ) )			return Collections.EMPTY_LIST;		List list = new ArrayList( );		ReportDesign report = (ReportDesign) element;		if ( report.getSlot( ReportDesign.PAGE_SLOT ).getCount( ) == 0 )		{			list.add( new SemanticError( report,					SemanticError.DESIGN_EXCEPTION_MISSING_MASTER_PAGE ) );		}		return list;	}