fun <T : Any> mapParsedKotlinFiles(vararg sourceRoots: File, block: (KtFile) -> T): List<T> =
        withParsedKotlinSource(sourceRoots.toList()) { ktFiles ->
            ktFiles.map(block)
        }

    fun parseSourceRoots(sourceRoots: List<File>, compilationClasspath: List<File>): ParsedKotlinFiles =
        Disposer.newDisposable().let { disposable ->