Sets the ExternalInitiatedEventId property

C# |
[ObsoleteAttribute("The With methods are obsolete and will be removed in version 2 of the AWS SDK for .NET. See http://aws.amazon.com/sdkfornet/#version2 for more information.")] public WorkflowExecutionCancelRequestedEventAttributes WithExternalInitiatedEventId( long externalInitiatedEventId )

- externalInitiatedEventId (Int64)
- The value to set for the ExternalInitiatedEventId property

this instance