Public Overridable Sub ModifyMonitoredItems( _
   ByVal context As OperationContext, _
   ByVal timestampsToReturn As TimestampsToReturn, _
   ByVal monitoredItems As IList(Of IMonitoredItem), _
   ByVal itemsToModify As IList(Of MonitoredItemModifyRequest), _
   ByVal errors As IList(Of ServiceResult), _
   ByVal filterResults As IList(Of MonitoringFilterResult) _
) 

public virtual void ModifyMonitoredItems( 
   OperationContext context,
   TimestampsToReturn timestampsToReturn,
   IList<IMonitoredItem> monitoredItems,
   IList<MonitoredItemModifyRequest> itemsToModify,
   IList<ServiceResult> errors,
   IList<MonitoringFilterResult> filterResults
)