Bug 202398 Aggregaton for List can not aggregate on group [0001]
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
}
		}
		catch ( BirtException e )
		{
			ExceptionHandler.handle( e );
		}
		return argList;
	}
	private String getArgumentByDisplayName( String function, String argument )
	{
		try
		{
			IAggregationInfo info = DataUtil.getAggregationFactory( )
					.getAggrInfo( function );
			Iterator arguments = info.getParameters( ).iterator( );
			for ( ; arguments.hasNext( ); )
			{
				IParameterInfo argInfo = (IParameterInfo) arguments.next( );
				if ( argInfo.getDisplayName( ).equals( argument ) )
					return argInfo.getName( );
			}
		}
		catch ( BirtException e )
		{
			ExceptionHandler.handle( e );
		}
		return null;
	}
	private String getArgumentDisplayNameByName( String function,
			String argument )