internal void AggregateInitialize(string dataSetName, ObjectType objectType, string objectName, string propertyName, InitializationContext context)
 {
     context.AggregateCheckFieldReferences(m_referencedFields, dataSetName, objectType, objectName, propertyName);
     context.AggregateCheckReportItemReferences(m_referencedReportItems, objectType, objectName, propertyName);
     context.AggregateCheckDataSetReference(m_referencedDataSets, objectType, objectName, propertyName);
     context.AggregateCheckDataSourceReference(m_referencedDataSources, objectType, objectName, propertyName);
     context.MergeFieldPropertiesIntoDataset(this);
     context.FillInFieldIndex(this, dataSetName);
     context.ExprHostBuilder.AggregateParamExprAdd(this);
 }