Issue #3382942: Eliminate dependencies on Composer Stager internals

tests/src/Traits/ComposerStagerTestTrait.php

@@ -19,6 +19,19 @@ trait ComposerStagerTestTrait {
 
   /**
    * Creates a Composer Stager translatable message.
+   *
+   * @param string $message
+   *   A message containing optional placeholders corresponding to parameters (next). Example:
+   *   ```php
+   *   $message = 'Hello, %first_name %last_name.';
+   *   ```
+   * @param \PhpTuf\ComposerStager\API\Translation\Value\TranslationParametersInterface|null $parameters
+   *   Translation parameters.
+   * @param string|null $domain
+   *   An arbitrary domain for grouping translations or null to use the default. See
+   *   {@see \PhpTuf\ComposerStager\API\Translation\Service\DomainOptionsInterface}.
+   *
+   * @return \PhpTuf\ComposerStager\API\Translation\Value\TranslatableInterface
    */
   protected function createComposeStagerMessage(
     string $message,