public async Task <IActionResult> GetAccounts()
        {
            return(await Task.Run(
                       () =>
            {
                IEnumerable <Account> accounts = _accountCacheList.GetValues();

                if (accounts == null)
                {
                    return BadRequest();
                }

                IActionResult actionResult = Ok(accounts);

                return actionResult;
            }));
        }
        public async Task <IActionResult> GetUsers()
        {
            return(await Task.Run(
                       () =>
            {
                IEnumerable <User> users = _userCacheList.GetValues();

                if (users == null)
                {
                    return BadRequest();
                }

                IActionResult actionResult = Ok(users);

                return actionResult;
            }));
        }