gistfile1.txt

 public Task<User> GetUser()
        {
            return NGitHub(_client.Users.GetAuthenticatedUserAsync)
        }

public Task<T> NGitHub<T>(Func<Action<T>, Action<Exception>, GitHubRequestAsyncHandle> call)
{
var _client = new GitHubClient
                              {
                                  Authenticator = new HttpBasicAuthenticator("user", "pass")
                              };

            var completionSource = new TaskCompletionSource<User>();
            
            call(completionSource.SetResult, completionSource.SetException);


            return completionSource.Task;
}

public Task<T> NGitHub<T, TArg>(Func<TArg, Action<T>, Action<Exception>, GitHubRequestAsyncHandle> call, TArg arg)
{
var _client = new GitHubClient
                              {
                                  Authenticator = new HttpBasicAuthenticator("user", "pass")
                              };

            var completionSource = new TaskCompletionSource<User>();
            
            call(arg, completionSource.SetResult, completionSource.SetException);


            return completionSource.Task;
}