public boolean haveLock() {
		return lockCount != 0;
	}
Determine if lock file was successfully created by this instance.
This does not quarentee that the lock is still present if more
than MAX_LOCK_LEASE_PERIOD has lapsed since lock was created.
@return true if lock has been created, otherwise false.
Ghidra/Framework/FileSystem/src/main/java/ghidra/framework/store/local/LockFile.java