.toSet()
            .map { getUserInfo(it) }
            .toSet()
    }

    private
    fun <T> invokeGitHubApi(uri: String, klass: Class<T>): T {
        val request = HttpRequest.newBuilder()
            .uri(URI(uri))
            .apply {
                if (githubToken.isPresent) {
                    header("Authorization", "token ${githubToken.get()}")
                }