https://api.drupal.org/api/drupal/core%21modules%21media%21tests%21src%21Functional%21MediaFunctionalTestTrait.php/property/MediaFunctionalTestTrait%3A%3Astorage/11.x
MediaFunctionalTestTrait::$storage | Drupal API
storagedrupalapi
https://api.drupal.org/api/drupal/core%21modules%21media%21tests%21src%21Functional%21MediaFunctionalTestTrait.php/function/MediaFunctionalTestTrait%3A%3AsetUp/11.x
function MediaFunctionalTestTrait::setUp | Drupal API
functionsetupdrupalapi