public async Task <UserModel> CreateUserIfDoesntExist(UserModel newUser)
{
ValidateUserHasEmail(newUser);
var user = await _databaseClient.GetDocumentByExpression <UserModel>(_databaseName, _userCollectionName, u => u.Email == newUser.Email);
if (user == null)
{
user = await _databaseClient.CreateDocument(_databaseName, _userCollectionName, newUser);
}
return(user);
}
