Function callback

packages/firebase-app-check/index.android.ts:75–81

(token: { token: string; expirationDate: Date }, error: FirebaseError)

			getToken() {
				let result;
				const callback = (token: { token: string; expirationDate: Date }, error: FirebaseError) => {
					if (token) {
						token = new (<any>org).nativescript.firebase.app_check.FirebaseAppCheck.AppCheckToken(token.token, token.expirationDate.getTime());
					} else {
						result = (error as any).intoNative();
					}
				};

				ref.get?.().getToken(callback);
				return result;