[[yii\web\User::identityClass|user identity class]] must implement the [[yii\web\IdentityInterface::findIdentityByAccessToken()|findIdentityByAccessToken()]]
Cross-origin resource sharing [CORS](https://developer.mozilla.org/fr/docs/HTTP/Access_control_CORS) is a mechanism that allows many resources (e.g. fonts, JavaScript, etc.)
The Cors filtering could be tuned using the `cors` property.
Cors のフィルタリングは `cors` プロパティを使ってチューニングすることが出来ます。
*`cors['Origin']`: array used to define allowed origins. Can be `['*']` (everyone) or `['http://www.myserver.net', 'http://www.myotherserver.com']`. Default to `['*']`.
*`cors['Access-Control-Request-Headers']`: array of allowed headers. Can be `['*']` all headers or specific ones `['X-Request-With']`. Default to `['*']`.
*`cors['Access-Control-Allow-Credentials']`: define if current request can be made using credentials. Can be `true`, `false` or `null` (not set). Default to `null`.