diff --git a/phpstan.neon b/phpstan.neon
index 583608043..7109cb5b4 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -5,7 +5,6 @@ includes:
 parameters:
     level: 8
 
-    checkGenericClassInNonGenericObjectType: false
     checkMissingIterableValueType: false
 
     paths:
diff --git a/src/Acl.php b/src/Acl.php
index d0d332cea..157687845 100644
--- a/src/Acl.php
+++ b/src/Acl.php
@@ -135,8 +135,10 @@ class Acl
         $numRoles = $user->getRoles()->count();
         if ($numRoles > 0) {
             if ($numRoles === 1) {
+                /** @var Entity\Role $role */
                 $role = $user->getRoles()->first();
-                return $this->roleAllowed($role->getId(), $action, $stationId);
+
+                return $this->roleAllowed($role->getIdRequired(), $action, $stationId);
             }
 
             $roles = [];
diff --git a/src/Controller/Api/Admin/Stations/CloneAction.php b/src/Controller/Api/Admin/Stations/CloneAction.php
index e123f3b37..8a0153709 100644
--- a/src/Controller/Api/Admin/Stations/CloneAction.php
+++ b/src/Controller/Api/Admin/Stations/CloneAction.php
@@ -222,6 +222,9 @@ final class CloneAction extends StationsController
         return $response->withJson(Entity\Api\Status::created());
     }
 
+    /**
+     * @param Collection<int, mixed> $collection
+     */
     private function cloneCollection(
         Collection $collection,
         Entity\Station $newStation,
diff --git a/src/Controller/Api/Stations/Files/ListAction.php b/src/Controller/Api/Stations/Files/ListAction.php
index d7d3345d7..6433e8c66 100644
--- a/src/Controller/Api/Stations/Files/ListAction.php
+++ b/src/Controller/Api/Stations/Files/ListAction.php
@@ -331,6 +331,7 @@ final class ListAction
             }
         );
 
+        /** @var array<int, Entity\Api\FileList> $result */
         $paginator = Paginator::fromArray($result, $request);
 
         // Add processor-intensive data for just this page.
diff --git a/src/Doctrine/Event/AuditLog.php b/src/Doctrine/Event/AuditLog.php
index d3f024690..6c0c05059 100644
--- a/src/Doctrine/Event/AuditLog.php
+++ b/src/Doctrine/Event/AuditLog.php
@@ -136,8 +136,8 @@ class AuditLog implements EventSubscriber
         $associated = [];
         $disassociated = [];
 
+        /** @var PersistentCollection<int, object> $collection */
         foreach ($uow->getScheduledCollectionUpdates() as $collection) {
-            /** @var PersistentCollection $collection */
             $owner = $collection->getOwner();
 
             if (null === $owner) {
@@ -180,8 +180,8 @@ class AuditLog implements EventSubscriber
             }
         }
 
+        /** @var PersistentCollection<int, object> $collection */
         foreach ($uow->getScheduledCollectionDeletions() as $collection) {
-            /** @var PersistentCollection $collection */
             $owner = $collection->getOwner();
 
             if (null === $owner) {
@@ -259,6 +259,11 @@ class AuditLog implements EventSubscriber
         return !$em->getMetadataFactory()->isTransient($class);
     }
 
+    /**
+     * @template TObject of object
+     * @param ReflectionClass<TObject> $refl
+     * @return bool
+     */
     protected function isAuditable(ReflectionClass $refl): bool
     {
         $auditable = $refl->getAttributes(Auditable::class);
diff --git a/src/Doctrine/Repository.php b/src/Doctrine/Repository.php
index e3b126f5e..185aa6a6f 100644
--- a/src/Doctrine/Repository.php
+++ b/src/Doctrine/Repository.php
@@ -33,6 +33,9 @@ class Repository
         }
     }
 
+    /**
+     * @return ObjectRepository<TEntity>
+     */
     public function getRepository(): ObjectRepository
     {
         return $this->repository;
diff --git a/src/Entity/Fixture/User.php b/src/Entity/Fixture/User.php
index a03632dc9..3b8bcac26 100644
--- a/src/Entity/Fixture/User.php
+++ b/src/Entity/Fixture/User.php
@@ -21,7 +21,11 @@ class User extends AbstractFixture implements DependentFixtureInterface
             $demo_user->setEmail('demo@azuracast.com');
             $demo_user->setNewPassword('demo');
             $demo_user->setName('AzuraCast Demo User');
-            $demo_user->getRoles()->add($this->getReference('demo_role'));
+
+            /** @var Entity\Role $demoRole */
+            $demoRole = $this->getReference('demo_role');
+            $demo_user->getRoles()->add($demoRole);
+
             $manager->persist($demo_user);
 
             $this->addReference('demo_user', $demo_user);
@@ -32,7 +36,9 @@ class User extends AbstractFixture implements DependentFixtureInterface
             $admin_user->setNewPassword($admin_password);
             $admin_user->setTheme('dark');
 
-            $admin_user->getRoles()->add($this->getReference('admin_role'));
+            /** @var Entity\Role $adminRole */
+            $adminRole = $this->getReference('admin_role');
+            $admin_user->getRoles()->add($adminRole);
 
             $admin_2fa_secret = getenv('INIT_ADMIN_2FA_SECRET');
             if (!empty($admin_2fa_secret)) {
diff --git a/src/Entity/Podcast.php b/src/Entity/Podcast.php
index a05afd98e..8948b272f 100644
--- a/src/Entity/Podcast.php
+++ b/src/Entity/Podcast.php
@@ -51,9 +51,11 @@ class Podcast implements Interfaces\IdentifiableEntityInterface
     #[Attributes\AuditIgnore]
     protected int $art_updated_at = 0;
 
+    /** @var Collection<int, PodcastCategory> */
     #[ORM\OneToMany(mappedBy: 'podcast', targetEntity: PodcastCategory::class)]
     protected Collection $categories;
 
+    /** @var Collection<int, PodcastEpisode> */
     #[ORM\OneToMany(mappedBy: 'podcast', targetEntity: PodcastEpisode::class)]
     protected Collection $episodes;
 
@@ -155,7 +157,7 @@ class Podcast implements Interfaces\IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection|PodcastCategory[]
+     * @return Collection<int, PodcastCategory>
      */
     public function getCategories(): Collection
     {
@@ -163,7 +165,7 @@ class Podcast implements Interfaces\IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection|PodcastEpisode[]
+     * @return Collection<int, PodcastEpisode>
      */
     public function getEpisodes(): Collection
     {
diff --git a/src/Entity/Relay.php b/src/Entity/Relay.php
index 112199f7a..5c8bb9d18 100644
--- a/src/Entity/Relay.php
+++ b/src/Entity/Relay.php
@@ -55,6 +55,7 @@ class Relay implements IdentifiableEntityInterface
     ]
     protected int $updated_at;
 
+    /** @var Collection<int, StationRemote> */
     #[ORM\OneToMany(mappedBy: 'relay', targetEntity: StationRemote::class)]
     protected Collection $remotes;
 
@@ -129,6 +130,9 @@ class Relay implements IdentifiableEntityInterface
         $this->updated_at = $updated_at;
     }
 
+    /**
+     * @return Collection<int, StationRemote>
+     */
     public function getRemotes(): Collection
     {
         return $this->remotes;
diff --git a/src/Entity/Role.php b/src/Entity/Role.php
index 678217bf9..3b54d7e4f 100644
--- a/src/Entity/Role.php
+++ b/src/Entity/Role.php
@@ -31,9 +31,11 @@ class Role implements JsonSerializable, Stringable, IdentifiableEntityInterface
     ]
     protected string $name;
 
+    /** @var Collection<int, User> */
     #[ORM\ManyToMany(targetEntity: User::class, mappedBy: 'roles')]
     protected Collection $users;
 
+    /** @var Collection<int, RolePermission> */
     #[
         OA\Property(type: "array", items: new OA\Items()),
         ORM\OneToMany(mappedBy: 'role', targetEntity: RolePermission::class)
@@ -56,11 +58,17 @@ class Role implements JsonSerializable, Stringable, IdentifiableEntityInterface
         $this->name = $this->truncateString($name, 100);
     }
 
+    /**
+     * @return Collection<int, User>
+     */
     public function getUsers(): Collection
     {
         return $this->users;
     }
 
+    /**
+     * @return Collection<int, RolePermission>
+     */
     public function getPermissions(): Collection
     {
         return $this->permissions;
diff --git a/src/Entity/Station.php b/src/Entity/Station.php
index 15a3fb181..be1754f9a 100644
--- a/src/Entity/Station.php
+++ b/src/Entity/Station.php
@@ -303,6 +303,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     ]
     protected ?string $default_album_art_url = null;
 
+    /** @var Collection<int, SongHistory> */
     #[
         ORM\OneToMany(mappedBy: 'station', targetEntity: SongHistory::class),
         ORM\OrderBy(['timestamp_start' => 'desc'])
@@ -351,6 +352,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     ]
     protected ?StorageLocation $podcasts_storage_location = null;
 
+    /** @var Collection<int, StationStreamer> */
     #[ORM\OneToMany(mappedBy: 'station', targetEntity: StationStreamer::class)]
     protected Collection $streamers;
 
@@ -366,21 +368,26 @@ class Station implements Stringable, IdentifiableEntityInterface
     #[ORM\Column(length: 255, nullable: true)]
     protected ?string $fallback_path = null;
 
+    /** @var Collection<int, RolePermission> */
     #[ORM\OneToMany(mappedBy: 'station', targetEntity: RolePermission::class)]
     protected Collection $permissions;
 
+    /** @var Collection<int, StationPlaylist> */
     #[
         ORM\OneToMany(mappedBy: 'station', targetEntity: StationPlaylist::class),
         ORM\OrderBy(['type' => 'ASC', 'weight' => 'DESC'])
     ]
     protected Collection $playlists;
 
+    /** @var Collection<int, StationMount> */
     #[ORM\OneToMany(mappedBy: 'station', targetEntity: StationMount::class)]
     protected Collection $mounts;
 
+    /** @var Collection<int, StationRemote> */
     #[ORM\OneToMany(mappedBy: 'station', targetEntity: StationRemote::class)]
     protected Collection $remotes;
 
+    /** @var Collection<int, StationWebhook> */
     #[ORM\OneToMany(
         mappedBy: 'station',
         targetEntity: StationWebhook::class,
@@ -389,6 +396,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     )]
     protected Collection $webhooks;
 
+    /** @var Collection<int, SftpUser> */
     #[ORM\OneToMany(mappedBy: 'station', targetEntity: SftpUser::class)]
     protected Collection $sftp_users;
 
@@ -398,6 +406,7 @@ class Station implements Stringable, IdentifiableEntityInterface
         $this->backend_type = BackendAdapters::Liquidsoap->value;
 
         $this->history = new ArrayCollection();
+        $this->permissions = new ArrayCollection();
         $this->playlists = new ArrayCollection();
         $this->mounts = new ArrayCollection();
         $this->remotes = new ArrayCollection();
@@ -941,7 +950,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<SongHistory>
+     * @return Collection<int, SongHistory>
      */
     public function getHistory(): Collection
     {
@@ -949,7 +958,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<StationStreamer>
+     * @return Collection<int, StationStreamer>
      */
     public function getStreamers(): Collection
     {
@@ -1065,7 +1074,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<RolePermission>
+     * @return Collection<int, RolePermission>
      */
     public function getPermissions(): Collection
     {
@@ -1073,7 +1082,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<StationMedia>
+     * @return Collection<int, StationMedia>
      */
     public function getMedia(): Collection
     {
@@ -1081,7 +1090,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<StationPlaylist>
+     * @return Collection<int, StationPlaylist>
      */
     public function getPlaylists(): Collection
     {
@@ -1089,7 +1098,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<StationMount>
+     * @return Collection<int, StationMount>
      */
     public function getMounts(): Collection
     {
@@ -1097,7 +1106,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<StationRemote>
+     * @return Collection<int, StationRemote>
      */
     public function getRemotes(): Collection
     {
@@ -1105,7 +1114,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<StationWebhook>
+     * @return Collection<int, StationWebhook>
      */
     public function getWebhooks(): Collection
     {
@@ -1113,7 +1122,7 @@ class Station implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<SftpUser>
+     * @return Collection<int, SftpUser>
      */
     public function getSftpUsers(): Collection
     {
diff --git a/src/Entity/StationBackendConfiguration.php b/src/Entity/StationBackendConfiguration.php
index 4a0c9d0ad..7ba87e247 100644
--- a/src/Entity/StationBackendConfiguration.php
+++ b/src/Entity/StationBackendConfiguration.php
@@ -10,6 +10,9 @@ use App\Radio\Enums\StreamFormats;
 use Doctrine\Common\Collections\ArrayCollection;
 use InvalidArgumentException;
 
+/**
+ * @extends ArrayCollection<string, mixed>
+ */
 class StationBackendConfiguration extends ArrayCollection
 {
     public const CHARSET = 'charset';
diff --git a/src/Entity/StationFrontendConfiguration.php b/src/Entity/StationFrontendConfiguration.php
index 53ff7c0df..a4feb889c 100644
--- a/src/Entity/StationFrontendConfiguration.php
+++ b/src/Entity/StationFrontendConfiguration.php
@@ -7,6 +7,9 @@ namespace App\Entity;
 use App\Utilities\Strings;
 use Doctrine\Common\Collections\ArrayCollection;
 
+/**
+ * @extends ArrayCollection<string, mixed>
+ */
 class StationFrontendConfiguration extends ArrayCollection
 {
     public function __construct(array $elements = [])
diff --git a/src/Entity/StationMedia.php b/src/Entity/StationMedia.php
index 9575038ab..9c25e3df3 100644
--- a/src/Entity/StationMedia.php
+++ b/src/Entity/StationMedia.php
@@ -191,6 +191,7 @@ class StationMedia implements
     ]
     protected int $art_updated_at = 0;
 
+    /** @var Collection<int, StationPlaylistMedia> */
     #[
         OA\Property(type: "array", items: new OA\Items()),
         ORM\OneToMany(mappedBy: 'media', targetEntity: StationPlaylistMedia::class),
@@ -199,6 +200,7 @@ class StationMedia implements
     ]
     protected Collection $playlists;
 
+    /** @var Collection<int, StationMediaCustomField> */
     #[ORM\OneToMany(mappedBy: 'media', targetEntity: StationMediaCustomField::class)]
     protected Collection $custom_fields;
 
@@ -428,13 +430,16 @@ class StationMedia implements
     }
 
     /**
-     * @return Collection<CustomField>
+     * @return Collection<int, StationMediaCustomField>
      */
     public function getCustomFields(): Collection
     {
         return $this->custom_fields;
     }
 
+    /**
+     * @param Collection<int, StationMediaCustomField> $custom_fields
+     */
     public function setCustomFields(Collection $custom_fields): void
     {
         $this->custom_fields = $custom_fields;
@@ -462,7 +467,7 @@ class StationMedia implements
     }
 
     /**
-     * @return Collection<StationPlaylistMedia>
+     * @return Collection<int, StationPlaylistMedia>
      */
     public function getPlaylists(): Collection
     {
diff --git a/src/Entity/StationPlaylist.php b/src/Entity/StationPlaylist.php
index cb56ca78d..5806a1073 100644
--- a/src/Entity/StationPlaylist.php
+++ b/src/Entity/StationPlaylist.php
@@ -181,17 +181,20 @@ class StationPlaylist implements
     ]
     protected int $queue_reset_at = 0;
 
+    /** @var Collection<int, StationPlaylistMedia> */
     #[
         ORM\OneToMany(mappedBy: 'playlist', targetEntity: StationPlaylistMedia::class, fetch: 'EXTRA_LAZY'),
         ORM\OrderBy(['weight' => 'ASC'])
     ]
     protected Collection $media_items;
 
+    /** @var Collection<int, StationPlaylistFolder> */
     #[
         ORM\OneToMany(mappedBy: 'playlist', targetEntity: StationPlaylistFolder::class, fetch: 'EXTRA_LAZY')
     ]
     protected Collection $folders;
 
+    /** @var Collection<int, StationSchedule> */
     #[
         OA\Property(type: "array", items: new OA\Items()),
         ORM\OneToMany(mappedBy: 'playlist', targetEntity: StationSchedule::class, fetch: 'EXTRA_LAZY'),
@@ -438,7 +441,7 @@ class StationPlaylist implements
     }
 
     /**
-     * @return Collection<StationPlaylistMedia>
+     * @return Collection<int, StationPlaylistMedia>
      */
     public function getMediaItems(): Collection
     {
@@ -446,7 +449,7 @@ class StationPlaylist implements
     }
 
     /**
-     * @return Collection<StationPlaylistFolder>
+     * @return Collection<int, StationPlaylistFolder>
      */
     public function getFolders(): Collection
     {
@@ -454,7 +457,7 @@ class StationPlaylist implements
     }
 
     /**
-     * @return Collection<StationSchedule>
+     * @return Collection<int, StationSchedule>
      */
     public function getScheduleItems(): Collection
     {
diff --git a/src/Entity/StationStreamer.php b/src/Entity/StationStreamer.php
index b22e12cc8..f61a3ea88 100644
--- a/src/Entity/StationStreamer.php
+++ b/src/Entity/StationStreamer.php
@@ -99,6 +99,7 @@ class StationStreamer implements
     ]
     protected int $art_updated_at = 0;
 
+    /** @var Collection<int, StationSchedule> */
     #[
         OA\Property(type: "array", items: new OA\Items()),
         ORM\OneToMany(mappedBy: 'streamer', targetEntity: StationSchedule::class),
@@ -228,7 +229,7 @@ class StationStreamer implements
     }
 
     /**
-     * @return Collection<StationSchedule>
+     * @return Collection<int, StationSchedule>
      */
     public function getScheduleItems(): Collection
     {
diff --git a/src/Entity/StorageLocation.php b/src/Entity/StorageLocation.php
index f3d5a52b0..aae81573e 100644
--- a/src/Entity/StorageLocation.php
+++ b/src/Entity/StorageLocation.php
@@ -100,6 +100,7 @@ class StorageLocation implements Stringable, IdentifiableEntityInterface
     #[Attributes\AuditIgnore]
     protected ?string $storageUsed = null;
 
+    /** @var Collection<int, StationMedia> */
     #[ORM\OneToMany(mappedBy: 'storage_location', targetEntity: StationMedia::class)]
     protected Collection $media;
 
@@ -462,7 +463,7 @@ class StorageLocation implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<StationMedia>
+     * @return Collection<int, StationMedia>
      */
     public function getMedia(): Collection
     {
@@ -508,7 +509,7 @@ class StorageLocation implements Stringable, IdentifiableEntityInterface
             $client = $this->getS3Client();
             $client->listObjectsV2(
                 [
-                    'Bucket'   => $this->s3Bucket,
+                    'Bucket' => $this->s3Bucket,
                     'max-keys' => 1,
                 ]
             );
@@ -550,12 +551,12 @@ class StorageLocation implements Stringable, IdentifiableEntityInterface
         $s3Options = array_filter(
             [
                 'credentials' => [
-                    'key'    => $this->s3CredentialKey,
+                    'key' => $this->s3CredentialKey,
                     'secret' => $this->s3CredentialSecret,
                 ],
-                'region'      => $this->s3Region,
-                'version'     => $this->s3Version,
-                'endpoint'    => $this->s3Endpoint,
+                'region' => $this->s3Region,
+                'version' => $this->s3Version,
+                'endpoint' => $this->s3Endpoint,
             ]
         );
         return new S3Client($s3Options);
diff --git a/src/Entity/User.php b/src/Entity/User.php
index 3919d2d31..f8ee1156f 100644
--- a/src/Entity/User.php
+++ b/src/Entity/User.php
@@ -105,6 +105,7 @@ class User implements Stringable, IdentifiableEntityInterface
     ]
     protected int $updated_at;
 
+    /** @var Collection<int, Role> */
     #[
         OA\Property(type: "array", items: new OA\Items()),
         ORM\ManyToMany(targetEntity: Role::class, inversedBy: 'users', fetch: 'EAGER'),
@@ -117,6 +118,7 @@ class User implements Stringable, IdentifiableEntityInterface
     ]
     protected Collection $roles;
 
+    /** @var Collection<int, ApiKey> */
     #[
         ORM\OneToMany(mappedBy: 'user', targetEntity: ApiKey::class),
         Groups([EntityGroupsInterface::GROUP_ADMIN, EntityGroupsInterface::GROUP_ALL]),
@@ -262,7 +264,7 @@ class User implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<Role>
+     * @return Collection<int, Role>
      */
     public function getRoles(): Collection
     {
@@ -270,7 +272,7 @@ class User implements Stringable, IdentifiableEntityInterface
     }
 
     /**
-     * @return Collection<ApiKey>
+     * @return Collection<int, ApiKey>
      */
     public function getApiKeys(): Collection
     {
diff --git a/src/Paginator.php b/src/Paginator.php
index 82c70a92e..6c099538c 100644
--- a/src/Paginator.php
+++ b/src/Paginator.php
@@ -20,6 +20,11 @@ use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Traversable;
 
+/**
+ * @template TKey of array-key
+ * @template T of mixed
+ * @implements IteratorAggregate<TKey, T>
+ */
 class Paginator implements IteratorAggregate, Countable
 {
     protected RouterInterface $router;
@@ -39,6 +44,9 @@ class Paginator implements IteratorAggregate, Countable
     /** @var callable|null A callable postprocessor that can be run on each result. */
     protected $postprocessor;
 
+    /**
+     * @param Pagerfanta<T> $paginator
+     */
     public function __construct(
         protected Pagerfanta $paginator,
         ServerRequestInterface $request
@@ -206,6 +214,13 @@ class Paginator implements IteratorAggregate, Countable
         );
     }
 
+    /**
+     * @template XKey of array-key
+     * @template X of mixed
+     *
+     * @param array<XKey, X> $input
+     * @return static<XKey, X>
+     */
     public static function fromArray(array $input, ServerRequestInterface $request): self
     {
         return new self(
@@ -214,6 +229,13 @@ class Paginator implements IteratorAggregate, Countable
         );
     }
 
+    /**
+     * @template XKey of array-key
+     * @template X of mixed
+     *
+     * @param Collection<XKey, X> $collection
+     * @return static<XKey, X>
+     */
     public static function fromCollection(Collection $collection, ServerRequestInterface $request): self
     {
         return new self(
@@ -222,6 +244,9 @@ class Paginator implements IteratorAggregate, Countable
         );
     }
 
+    /**
+     * @return static<int, mixed>
+     */
     public static function fromQueryBuilder(QueryBuilder $qb, ServerRequestInterface $request): self
     {
         return new self(
@@ -230,6 +255,9 @@ class Paginator implements IteratorAggregate, Countable
         );
     }
 
+    /**
+     * @return static<int, mixed>
+     */
     public static function fromQuery(Query $query, ServerRequestInterface $request): self
     {
         return new self(
diff --git a/src/Radio/AutoDJ/Scheduler.php b/src/Radio/AutoDJ/Scheduler.php
index 73a2d4f35..1dec6a501 100644
--- a/src/Radio/AutoDJ/Scheduler.php
+++ b/src/Radio/AutoDJ/Scheduler.php
@@ -227,7 +227,7 @@ class Scheduler
     }
 
     /**
-     * @param Collection<Entity\StationSchedule> $scheduleItems
+     * @param Collection<int, Entity\StationSchedule> $scheduleItems
      * @param CarbonInterface $now
      * @return Entity\StationSchedule|null
      */