given:
        def lockFile = tmpDir.file('gradle.lockfile')
        lockFile << """#ignored
bar=a,c
foo=a,b,c
empty=d
"""

        when:
        def result = lockFileReaderWriter.readUniqueLockFile()

        then:
        result == [a: ['bar', 'foo'], b: ['foo'], c: ['bar', 'foo'], d: []]

        1 * listener.fileObserved(lockFile)
    }

    def 'reads an invalid unique lock file '() {

        }
        return result;
    }

    private synchronized void loadLockState() {
        if (!uniqueLockStateLoaded) {
            try {
                allLockState = lockFileReaderWriter.readUniqueLockFile();
                uniqueLockStateLoaded = true;
            } catch (IllegalStateException e) {

            if (value.startsWith("#") || value.isEmpty()) {
                iterator.remove();
            }
        }
    }

    public Map<String, List<String>> readUniqueLockFile() {
        checkValidRoot();
        Predicate<String> empty = String::isEmpty;
        Predicate<String> comment = s -> s.startsWith("#");
        Path uniqueLockFile = getUniqueLockfilePath();