/**
* Get a singleton instance of test user
*
* @param string|null $accessToken
* @return \OldTimeGuitarGuy\Plaid\Contracts\User
*/
protected function user($accessToken = null)
{
if (!is_null($accessToken) && $accessToken !== 'test_wells') {
return new TestUser($accessToken);
}
if (isset(self::$user)) {
return self::$user;
}
return self::$user = new TestUser('test_wells');
}
