/// <summary>
 /// This method removes a like a user added to a post.
 /// </summary>
 /// <example>
 /// <code>
 /// private static void RunDemoAsync()
 /// {
 ///     Api api = new Api(new FBMLCanvasSession(Constants.WebApplicationKey, Constants.WebSecret));
 ///     api.Session.UserId = Constants.UserId;
 ///     api.Stream.RemoveLikeAsync(Constants.UserId, Constants.PostId1, AsyncDemoCompleted, null);
 /// }
 ///
 /// private static void AsyncDemoCompleted(bool result, Object state, FacebookException e)
 /// {
 ///     var actual = result;
 /// }
 /// </code>
 /// </example>
 /// <param name="uid">The user ID of the user who liked the post. If this parameter is not specified, then it defaults to the session user. Note: This parameter applies only to Web applications.  Facebook ignores this parameter if it is passed by a desktop application.</param>
 /// <param name="postId">The ID of the post.</param>
 /// <param name="callback">The AsyncCallback delegate</param>
 /// <param name="state">An object containing state information for this asynchronous request</param>        
 /// <returns>This method returns true on success, or false and an error code if it fails.</returns>
 public void RemoveLikeAsync(long uid, string postId, RemoveLikeCallback callback, Object state)
 {
     RemoveLike(uid, postId, true, callback, state);
 }
        private bool RemoveLike(long uid, string post_id, bool isAsync, RemoveLikeCallback callback, Object state)
        {
            var parameterList = new Dictionary<string, string> { { "method", "facebook.stream.removeLike" } };
            Utilities.AddOptionalParameter(parameterList, "uid", uid);
            Utilities.AddRequiredParameter(parameterList, "post_id", post_id);

            if (isAsync)
            {
                SendRequestAsync<stream_removeLike_response, bool>(parameterList, uid <= 0, new FacebookCallCompleted<bool>(callback), state);
                return true;
            }

            var response = SendRequest<stream_removeLike_response>(parameterList, uid <= 0);
            return response == null ? true : response.TypedValue;
        }
 /// <summary>
 /// This method removes a like a user added to a post.
 /// </summary>
 /// <example>
 /// <code>
 /// private static void RunDemoAsync()
 /// {
 ///     Api api = new Api(new FBMLCanvasSession(Constants.WebApplicationKey, Constants.WebSecret));
 ///     api.Session.UserId = Constants.UserId;
 ///     api.Stream.RemoveLikeAsync(Constants.PostId1, AsyncDemoCompleted, null);
 /// }
 ///
 /// private static void AsyncDemoCompleted(bool result, Object state, FacebookException e)
 /// {
 ///     var actual = result;
 /// }
 /// </code>
 /// </example>
 /// <param name="postId">The ID of the post.</param>
 /// <param name="callback">The AsyncCallback delegate</param>
 /// <param name="state">An object containing state information for this asynchronous request</param>        
 /// <returns>This method returns true on success, or false and an error code if it fails.</returns>
 public void RemoveLikeAsync(string postId, RemoveLikeCallback callback, Object state)
 {
     RemoveLike(Session.UserId, postId, true, callback, state);
 }