Google::mapUserData

protected function mapUserData(array $userData)
{
	return array(
		'email' => $userData['email'],
		'first_name' => $userData['given_name'],
		'last_name' => $userData['family_name'],
		'full_name' => $userData['name'],
		'image' => $userData['picture'],
		'error' => $userData['error']['message'],
	);
}