How to add url to Readability using Hammock (assumes you've already done the oauth part to get the token and tokenSecret)

Readability_AddUrl

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Peregrine.Utilities
{
	public static class Readability
	{
		private const string consumerKey = "CONSUMERKEY";
		private const string consumerSecret = "CONSUMERSECRET";
		private const string serviceurl = "https://www.readability.com/api/rest/v1/bookmarks";

		public static void AddUrl(string token, string tokenSecret, string username,
			string url,
			Action<string> complete)
		{
			//Return codes which should be treated as success: 201=Created, 202=Accepted, 409 Conflict
			//Error codes: 400 Bad Request, 401 Auth required, 500 Internal Server Error
			if (token == null)
			{
				complete("Username not set. Please got to settings to configure your Readability account");
				return;
			}
			Hammock.RestClient client = new Hammock.RestClient()
			{
				Authority = "https://www.readability.com/api/rest/v1",
				HasElevatedPermissions = true,
				Credentials = new Hammock.Authentication.OAuth.OAuthCredentials()
				{
					ConsumerKey = consumerKey, ConsumerSecret = consumerSecret,
					Token = token, TokenSecret = tokenSecret, ClientUsername = username,
					SignatureMethod = Hammock.Authentication.OAuth.OAuthSignatureMethod.HmacSha1,
					ParameterHandling = Hammock.Authentication.OAuth.OAuthParameterHandling.UrlOrPostParameters,
					Version = "1.0", Type = Hammock.Authentication.OAuth.OAuthType.ProtectedResource
				}
			};
			Hammock.RestRequest request = new Hammock.RestRequest()
			{
				Path = "bookmarks", Method = Hammock.Web.WebMethod.Post
			};
			request.AddParameter("url", url);
			TaskCompletionSource<bool> tcs = new TaskCompletionSource<bool>();
			client.BeginRequest(request, new Hammock.RestCallback((a, b, c) =>
			{
				if (complete != null)
				{
					int code = (int)b.StatusCode;
					if (code < 300 && code>=200 || code == 409 )
					{
						complete("OK");
					}
					else
					{
						complete(b.StatusDescription);
					}
				}
			}));
		}
	}
}