我正在做一个Symfony项目，我开始使用Psalm。几乎一切都很好，因为我一直得到一个我不明白的错误：

ERROR: PossiblyUnusedMethod - src/Repository/PlaylistRepository.php:116:21 - Cannot find any calls to method App\Repository\PlaylistRepository::getPlaylistsFor (see https://psalm.dev/087)
    public function getPlaylistsFor( ?User $user = null ) : array

这个函数被声明为PossiblyUnusedMethod，但我调用它，正如你在下面的代码中看到的：

// src/Controller/PlaylistController.php
#[ Route( '/playlists', name: 'playlists-home' ) ]
public function playlists(
    EntityManagerInterface $em,
    PlaylistRepository $playlistRepository,
) : RedirectResponse|Response
{
    $params = [
        'controller_name' => self::class,
        'playlists' => $playlistRepository->getPlaylistsForUserAuthed(),
    ];
    return $this->render( 'playlists/home.html.twig', $params );
}

// src/Repository/PlaylistRepository.php
public function getPlaylistsForUserAuthed() : array
{
    $em = SpotifyTools::getEntityManager();
    /** @var UserRepository $userRepository */
    $userRepository = $em->getRepository( User::class );

    return $this->getPlaylistsFor( $userRepository->getUserAuthed() );
}

有人能帮我理解一下吗？

解决方案

由于此函数仅在repo中使用，因此通过将方法的可见性从public更改为private/protected来清 debugging 误。