}
        return Gson().fromJson(response.body(), klass)
    }

    private
    fun getUserInfo(login: String): GitHubUser {
        val uri = "https://api.github.com/users/$login"
        return invokeGitHubApi(uri, GitHubUser::class.java)
    }

    private
    fun getMergedContributorPullRequests(pageNumber: Int): List<GitHubPullRequest> {

    @TaskAction
    fun check() {
        val contributorsInReleaseNotes = TreeSet(getContributorsInReleaseNotes().map { it.login })
        val contributorsFromPullRequests = TreeSet(getContributorsFromPullRequests().map { it.login })
        val contributorsInPullRequestsButNotInReleaseNotes = contributorsFromPullRequests.minus(contributorsInReleaseNotes)

    @TaskAction
    fun update() {
        val contributorsInReleaseNotes = getContributorsInReleaseNotes().associateBy { it.login }
        val contributorsFromPullRequests = getContributorsFromPullRequests().associateBy { it.login }

        val unrecognizedContributors = contributorsFromPullRequests.keys - contributorsInReleaseNotes.keys
        if (unrecognizedContributors.isNotEmpty()) {