Inheritance: extends RestBase
 /**
  * testAuthenticationWithBadCredentials test sets a dummy token store.
  * We need to set the proper token store object for other test(s).
  */
 public function setUp()
 {
     self::$tokenStore = ObjectStorage_TokenStore::factory('file', array('ttl' => 3600, 'path' => '/tmp'));
     ObjectStorage::setTokenStore(self::$tokenStore);
 }