private GitHubService(GitHubOAuthClient client) {
     Client = client;
     Organizations = new GitHubOrganizationsEndpoint(this);
     Repositories = new GitHubRepositoriesEndpoint(this);
     User = new GitHubUserEndpoint(this);
     Users = new GitHubUsersEndpoint(this);
 }
 private GitHubService() {
     Repositories = new GitHubRepositoriesEndpoint(this);
 }