private boolean isBlocked(Address sourceAddress, Address destinationAddress) {
		return acceptedStatusCache.isBlocked(sourceAddress, destinationAddress);
	}
Called when an existing session has been initialized with its programs.  This is not called
when a new session is created.
Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/api/db/AssociationDatabaseManager.java