The number of times this entry has been logged.
Optional additional data associated with this tracking entry.
The difference in milliseconds between start and stop.
A random RFC 4122 UUID.
The description of this tracking entry.
The number of milliseconds between January 1, 1970 00:00:00 UTC and when this entry was created.
The number of milliseconds between January 1, 1970 00:00:00 UTC and when this entry was ended.
The type of tracking information provided in this object. Either 'event', 'timer', or 'error'.
Encapsulates tracking information. The TrackingSubscriber will be invoked with an instance for each Tracker (or child Tracker) method invoked.