Bug 207825 Crosstab gives wrong default for Totals on Count
xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/internal/AbstractCrosstabModelTask.java
return levelView.getAggregationFunction( measureView );
	}
	/**
	 * 
	 * @param leftLevelView
	 * @param rightLevelView
	 * @throws SemanticException
	 */
	protected void removeMeasureAggregation( LevelViewHandle leftLevelView,
			LevelViewHandle rightLevelView ) throws SemanticException
	{
		AggregationInfo infor = getAggregationInfo( leftLevelView,
				rightLevelView );
		for ( int i = 0; i < crosstab.getMeasureCount( ); i++ )
		{
			MeasureViewHandle measureView = crosstab.getMeasure( i );
			measureView.removeAggregation( infor.getRowDimension( ),
					infor.getRowLevel( ),
					infor.getColDimension( ),
					infor.getColLevel( ) );
		}
	}
	/**
	 * Locates the cell which controls the column with for given cell
	 * 
	 * @param crosstab
	 * @throws SemanticException
	 */
	public void validateCrosstab( ) throws SemanticException
	{