public async Task <dynamic> DeleteCategoryAsync(string userId, string categoryId)
        {
            string url = functionsApiProxy + "/categories/" + categoryId + "/?userId=" + userId;

            return(await CRUDService.HttpMethodAsync("DELETE", url, null));
        }
        /** CATEGORY CRUD Methods */
        public async Task <dynamic> GetCategoriesAsync(string userId)
        {
            string url = functionsApiProxy + "/categories?userId=" + userId;

            return(await CRUDService.HttpMethodAsync("GET", url, null));
        }
        public async Task <dynamic> DeleteTextAsync(string userId, string textId)
        {
            string url = functionsApiProxy + "/text/" + textId + "/?userId=" + userId;

            return(await CRUDService.HttpMethodAsync("DELETE", url, null));
        }
        public async Task <dynamic> ListTextAsync(string userId)
        {
            string url = functionsApiProxy + "/text?userId=" + userId;

            return(await CRUDService.HttpMethodAsync("GET", url, null));
        }
        public async Task <dynamic> GetAudioAsync(string userId, string audioId)
        {
            string url = functionsApiProxy + "/audio/" + audioId + "/?userId=" + userId;

            return(await CRUDService.HttpMethodAsync("GET", url, null));
        }
        public async Task <dynamic> DeleteImageAsync(string userId, string imageId)
        {
            string url = functionsApiProxy + "/images/" + imageId + "/?userId=" + userId;

            return(await CRUDService.HttpMethodAsync("DELETE", url, null));
        }