12 files declare their use of Authentication in Auth0 Single Sign On 8.2

ApiTests.php in vendor/auth0/auth0-php/tests/API/ApiTests.php

Auth0.php in vendor/auth0/auth0-php/src/Auth0.php

AuthController.php in src/Controller/AuthController.php

Contains \Drupal\auth0\Controller\AuthController.

AuthHelper.php in src/Util/AuthHelper.php

Contains \Drupal\auth0\Util\AuthHelper.

ClientCredentialsTest.php in vendor/auth0/auth0-php/tests/API/Authentication/ClientCredentialsTest.php

DbConnectionsTest.php in vendor/auth0/auth0-php/tests/API/Authentication/DbConnectionsTest.php

DeprecatedTest.php in vendor/auth0/auth0-php/tests/API/Authentication/DeprecatedTest.php

MockApi.php in vendor/auth0/auth0-php/tests/MockApi.php

MockAuthenticationApi.php in vendor/auth0/auth0-php/tests/API/Authentication/MockAuthenticationApi.php

PasswordGrantTest.php in vendor/auth0/auth0-php/tests/API/Authentication/PasswordGrantTest.php

RefreshTokenTest.php in vendor/auth0/auth0-php/tests/API/Authentication/RefreshTokenTest.php

UrlBuildersTest.php in vendor/auth0/auth0-php/tests/API/Authentication/UrlBuildersTest.php