Issue #3231694: TestFileCreationTrait::getTestFiles() has incorrect @return type

core/tests/Drupal/Tests/TestFileCreationTrait.php

@@ -48,8 +48,9 @@ trait TestFileCreationTrait {
    *   (optional) File size in bytes to match. Defaults to NULL, which will not
    *   filter the returned list by size.
    *
-   * @return array[]
-   *   List of files in public:// that match the filter(s).
+   * @return object[]
+   *   List of files in public:// that match the filter(s). Each file is an
+   *   object with 'uri', 'filename', and 'name' properties.
    */
   protected function getTestFiles($type, $size = NULL) {
     /** @var \Drupal\Core\File\FileSystemInterface $file_system */