https://api.drupal.org/api/drupal/namespace/Drupal%21Tests%21Core%21StringTranslation/8.9.x
namespace Drupal\Tests\Core\StringTranslation | Drupal API
namespacedrupaltestscoreapi
https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21StringTranslation%21StringTranslationTrait.php/property/StringTranslationTrait%3A%3AstringTranslation/11.x
StringTranslationTrait::$stringTranslation | Drupal API
drupalapi
https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21StringTranslation%21TranslatableMarkup.php/property/TranslatableMarkup%3A%3AstringTranslation/11.x
TranslatableMarkup::$stringTranslation | Drupal API
drupalapi