fun nestedClassFilePathCandidatesFor(path: String): Sequence<String> =
    generateSequence({ nestedClassNameFor(path) }, ::nestedClassNameFor)
        .flatMap(::candidateClassFiles)


private
fun candidateClassFiles(path: String) =
    sequenceOf("$path$CLASS_FILE_EXTENSION", "${path}Kt$CLASS_FILE_EXTENSION")


private
fun nestedClassNameFor(path: String) = path.run {
    lastIndexOf('/').takeIf { it > 0 }?.let { index ->