try {
// plugin must be active to get computer
ICompletionProposalComputer computer = getComputer(true);
if (computer != null) {
PerformanceStats stats= startMeter(SESSION_ENDED, computer);
computer.sessionEnded();
stopMeter(stats, SESSION_ENDED);
}
} catch (InvalidRegistryObjectException x) {
status= createExceptionStatus(x);
} catch (CoreException x) {