public async Task <FacebookAccount> GetAccountAsync(string accessToken)
{
var response = await _facebookClient.GetAsync <dynamic>(
accessToken, "me", "fields=id,name,first_name,last_name");
if (response == null)
{
throw new Exception("FacebookAccount not found. ");
}
FacebookAccount facebookAccount = _modelMapper.GetFacebookAccount(response);
return(facebookAccount);
}