/**
     * All found class files bytes by Kotlin source name.
     */
    fun allClassesBytesBySourceName(): Sequence<Pair<String, ClassBytesSupplier>> =
        classPathFiles.asSequence()
            .flatMap { sourceNamesFrom(it) }
            .mapNotNull { sourceName ->
                classBytesSupplierForSourceName(sourceName)?.let { sourceName to it }
            }

    private