This read-only CXgcpCallEvent object reports the most recent call event on this connection that completed successfully, where a call event is defined as something that happens to a call at a given time. Admins use it to see the last thing that went right for a connection, useful context when a subsequent event then fails. For example, when diagnosing a call that stalled partway through setup, an admin would check this object to see the last successful step before comparing it to the last failed event object.