| Get the TimestampEntry for the local blackboard UniqueObject
with the given UID.
The timestamps are measured in milliseconds, and matches the
transaction close times of the blackboard subscriber that
performed the "publishAdd()" or "publishChange()".
The underlying (UID, TimestampEntry) map is dynamically
maintained by a separate subscriber. These methods are
thread safe. Clients should be aware that multiple calls
to "getTimestampEntry(..)" may return different responses.
The service provider of this service may restrict the set
of UniqueObjects covered by this service. UniqueObjects
that are not covered have null TimestampEntry values.
the TimestampEntry for the UniqueObject with the specified UID, or null if not known. |