Maximum service time for data messages (in microseconds).

C# |
public long dataMessagesMaximumServiceTime()

Maximum service time for data messages (in microseconds). This is
the high-water mark (i.e., the longest so far) for data message service
durations measured from the point of de-queuement until the application has
finished servicing the message. Configuration option
queue_service_time_enabled must be activated.