* @param originalColumnDescription The original column description.
* @return A column description for the aggregation column.
*/
/* package */ ColumnDescription createAggregationColumnDescription(
ColumnDescription originalColumnDescription) {
AggregationType aggregationType = aggregation.getAggregationType();
String columnId = createIdPivotPrefix() + aggregation.getId();
ValueType type = originalColumnDescription.getType();
String aggregationLabelPart = aggregation.getAggregationType().getCode()
+ " " + originalColumnDescription.getLabel();
String pivotLabelPart = createLabelPivotPart();