return ExpressionParserUtility.hasAggregation( expression );
return ExpressionParserUtility.hasAggregation( expression, true );
	public static boolean hasAggregation( String expression )	{		if ( expression == null )			return false;		try		{			return ExpressionParserUtility.hasAggregation( expression );		}		catch ( BirtException e )		{			return false;		}	}