asUserArnValueOrNull
Casts this AuditEventFieldValueUnion as a UserArnValue and retrieves its kotlin.String value. Returns null if the AuditEventFieldValueUnion is not a UserArnValue.
Casts this AuditEventFieldValueUnion as a UserArnValue and retrieves its kotlin.String value. Returns null if the AuditEventFieldValueUnion is not a UserArnValue.