public IHttpActionResult RemoveRepositoryFromFavorites(string clientId, string repositoryKey)
        {
            bool result = false;

            try
            {
                if (string.IsNullOrWhiteSpace(clientId) || string.IsNullOrWhiteSpace(repositoryKey))
                {
                    return(BadRequest());
                }

                result = FavoritesStorage.RemoveRepository(clientId, repositoryKey);

                if (result)
                {
                    return(Ok());
                }
                else
                {
                    return(Conflict());
                }
            }
            catch (Exception ex)
            {
                return(InternalServerError(ex));
            }
        }