https://api.drupal.org/api/drupal/core%21modules%21aggregator%21tests%21src%21Functional%21FeedFetcherPluginTest.php/function/FeedFetcherPluginTest%3A%3AsetUp/8.9.x
function FeedFetcherPluginTest::setUp | Drupal API
functionsetupdrupalapi
https://api.drupal.org/api/drupal/core%21modules%21aggregator%21tests%21src%21Functional%21FeedFetcherPluginTest.php/property/FeedFetcherPluginTest%3A%3AdefaultTheme/9
FeedFetcherPluginTest::$defaultTheme | Drupal API
drupalapi