public async Task <ApplicationUser> CreateUser(string username, string password)
{
var hash = password; //todo: hash password;
var user = new UserEntity();
user.CreateUser(username, hash);
user.SetAsUserNameRecord();
await _tableClient.AddAsync <UserEntity>(user);
user.SetAsUserIdRecord();
await _tableClient.AddAsync <UserEntity>(user);
return(user.ValidateUser(password));
}