private void clear() {
		exc = null;
		isCancelled = false;
		count = 0;
	}
Provides the ability to synchronize concurrent connection task
instances within the same thread.  This can occur within the swing thread due to the presence
of a modal task dialog event queue.  It also allows password cancelation to be propogated to the
other tasks(s).
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/BSimDBConnectTaskCoordinator.java