Protected Overridable Function ModifyMonitoredItem( _
   ByVal context As ServerSystemContext, _
   ByVal diagnosticsMasks As DiagnosticsMasks, _
   ByVal timestampsToReturn As TimestampsToReturn, _
   ByVal monitoredItem As IMonitoredItem, _
   ByVal itemToModify As MonitoredItemModifyRequest, _
   ByVal handle As NodeHandle, _
   ByRef filterResult As MonitoringFilterResult _
) As ServiceResult

protected virtual ServiceResult ModifyMonitoredItem( 
   ServerSystemContext context,
   DiagnosticsMasks diagnosticsMasks,
   TimestampsToReturn timestampsToReturn,
   IMonitoredItem monitoredItem,
   MonitoredItemModifyRequest itemToModify,
   NodeHandle handle,
   out MonitoringFilterResult filterResult
)