public Set<EventRequest> findRequests(Requestor requestor) {
    DebuggerManagerThreadImpl.assertIsManagerThread();
    final Set<EventRequest> requestSet = myRequestorToBelongedRequests.get(requestor);
    if (requestSet == null) {
      return Collections.emptySet();
    }
    return Collections.unmodifiableSet(requestSet);
  }
public Set<EventRequest> findRequests(Requestor requestor)