https://api.drupal.org/api/drupal/core%21modules%21serialization%21src%21Normalizer%21FieldNormalizer.php/property/FieldNormalizer%3A%3AsupportedInterfaceOrClass/9
FieldNormalizer::$supportedInterfaceOrClass | Drupal API
drupalapi
https://api.drupal.org/api/drupal/core%21modules%21jsonapi%21src%21Normalizer%21FieldNormalizer.php/11.x
FieldNormalizer.php | Drupal API
phpdrupalapi