public override async Task <ViewFriendsResponse> ViewFriends(ViewFriendsRequest request, ServerCallContext context)
        {
            RedisUserModel user = context.UserState["user"] as RedisUserModel;

            if (user == null)
            {
                return new ViewFriendsResponse()
                       {
                           Status = ResponseFactory.createResponse(ResponseType.UNAUTHORIZED)
                       }
            }
            ;

            ViewFriendsResponse response = new ViewFriendsResponse();

            response.Friends.AddRange((await user.GetFriends()).ConvertAll(input => input.asUser()));
            response.Status = ResponseFactory.createResponse(ResponseType.SUCCESS);
            return(response);
        }