https://api.drupal.org/api/drupal/core%21modules%21config%21tests%21src%21Functional%21ConfigLanguageOverrideWebTest.php/9
ConfigLanguageOverrideWebTest.php | Drupal API
phpdrupalapi
https://api.drupal.org/api/drupal/core%21modules%21config%21tests%21src%21Functional%21ConfigLanguageOverrideWebTest.php/function/ConfigLanguageOverrideWebTest%3A%3AsetUp/9
function ConfigLanguageOverrideWebTest::setUp | Drupal API
functionsetupdrupalapi