diff --git a/src/Bundle/ChillActivityBundle/Entity/Activity.php b/src/Bundle/ChillActivityBundle/Entity/Activity.php
index 32ceb2e74..c4c56fafb 100644
--- a/src/Bundle/ChillActivityBundle/Entity/Activity.php
+++ b/src/Bundle/ChillActivityBundle/Entity/Activity.php
@@ -104,6 +104,7 @@ class Activity implements AccompanyingPeriodLinkedWithSocialIssuesEntityInterfac
     /**
      * @ORM\ManyToMany(targetEntity="Chill\DocStoreBundle\Entity\StoredObject", cascade={"persist"})
      * @Assert\Valid(traverse=true)
+     * @var Collection<StoredObject>
      */
     private Collection $documents;
 
@@ -140,8 +141,9 @@ class Activity implements AccompanyingPeriodLinkedWithSocialIssuesEntityInterfac
     /**
      * @ORM\ManyToMany(targetEntity="Chill\PersonBundle\Entity\Person")
      * @Groups({"read", "docgen:read"})
+     * @var Collection<Person>
      */
-    private ?Collection $persons = null;
+    private Collection $persons;
 
     /**
      * @ORM\Embedded(class="Chill\MainBundle\Entity\Embeddable\PrivateCommentEmbeddable", columnPrefix="privateComment_")
@@ -151,6 +153,7 @@ class Activity implements AccompanyingPeriodLinkedWithSocialIssuesEntityInterfac
     /**
      * @ORM\ManyToMany(targetEntity="Chill\ActivityBundle\Entity\ActivityReason")
      * @Groups({"docgen:read"})
+     * @var Collection<ActivityReason>
      */
     private Collection $reasons;
 
@@ -170,6 +173,7 @@ class Activity implements AccompanyingPeriodLinkedWithSocialIssuesEntityInterfac
      * @ORM\ManyToMany(targetEntity="Chill\PersonBundle\Entity\SocialWork\SocialAction")
      * @ORM\JoinTable(name="chill_activity_activity_chill_person_socialaction")
      * @Groups({"read", "docgen:read"})
+     * @var Collection<SocialAction>
      */
     private Collection $socialActions;
 
@@ -177,14 +181,16 @@ class Activity implements AccompanyingPeriodLinkedWithSocialIssuesEntityInterfac
      * @ORM\ManyToMany(targetEntity="Chill\PersonBundle\Entity\SocialWork\SocialIssue")
      * @ORM\JoinTable(name="chill_activity_activity_chill_person_socialissue")
      * @Groups({"read", "docgen:read"})
+     * @var Collection<SocialIssue>
      */
     private Collection $socialIssues;
 
     /**
      * @ORM\ManyToMany(targetEntity="Chill\ThirdPartyBundle\Entity\ThirdParty")
      * @Groups({"read", "docgen:read"})
+     * @var Collection<ThirdParty>
      */
-    private ?Collection $thirdParties = null;
+    private Collection $thirdParties;
 
     /**
      * @ORM\Column(type="time", nullable=true)
@@ -200,8 +206,9 @@ class Activity implements AccompanyingPeriodLinkedWithSocialIssuesEntityInterfac
     /**
      * @ORM\ManyToMany(targetEntity="Chill\MainBundle\Entity\User")
      * @Groups({"read", "docgen:read"})
+     * @var Collection<User>
      */
-    private ?Collection $users = null;
+    private Collection $users;
 
     public function __construct()
     {
diff --git a/src/Bundle/ChillActivityBundle/Entity/ActivityReasonCategory.php b/src/Bundle/ChillActivityBundle/Entity/ActivityReasonCategory.php
index ab63232a5..1bae408dc 100644
--- a/src/Bundle/ChillActivityBundle/Entity/ActivityReasonCategory.php
+++ b/src/Bundle/ChillActivityBundle/Entity/ActivityReasonCategory.php
@@ -12,6 +12,7 @@ declare(strict_types=1);
 namespace Chill\ActivityBundle\Entity;
 
 use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
 
 /**
@@ -47,12 +48,12 @@ class ActivityReasonCategory implements \Stringable
     /**
      * Array of ActivityReason.
      *
-     * @var ArrayCollection
+     * @var Collection<ActivityReason>
      * @ORM\OneToMany(
      *     targetEntity="Chill\ActivityBundle\Entity\ActivityReason",
      * mappedBy="category")
      */
-    private $reasons;
+    private Collection $reasons;
 
     /**
      * ActivityReasonCategory constructor.
diff --git a/src/Bundle/ChillAsideActivityBundle/src/Entity/AsideActivityCategory.php b/src/Bundle/ChillAsideActivityBundle/src/Entity/AsideActivityCategory.php
index 2ccab56d0..44777f110 100644
--- a/src/Bundle/ChillAsideActivityBundle/src/Entity/AsideActivityCategory.php
+++ b/src/Bundle/ChillAsideActivityBundle/src/Entity/AsideActivityCategory.php
@@ -25,8 +25,9 @@ class AsideActivityCategory
 {
     /**
      * @ORM\OneToMany(targetEntity=AsideActivityCategory::class, mappedBy="parent")
+     * @var Collection<AsideActivityCategory>
      */
-    private $children;
+    private Collection $children;
 
     /**
      * @ORM\Id
@@ -36,7 +37,6 @@ class AsideActivityCategory
     private int $id;
 
     /**
-     * @ORM\OneToMany(targetEntity=AsideActivityCategory::class, mappedBy="parent")
      * @ORM\Column(type="boolean")
      */
     private bool $isActive = true;
diff --git a/src/Bundle/ChillCalendarBundle/Entity/Calendar.php b/src/Bundle/ChillCalendarBundle/Entity/Calendar.php
index dc98c47d9..10a675278 100644
--- a/src/Bundle/ChillCalendarBundle/Entity/Calendar.php
+++ b/src/Bundle/ChillCalendarBundle/Entity/Calendar.php
@@ -30,6 +30,7 @@ use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\Common\Collections\ReadableCollection;
+use Doctrine\Common\Collections\Selectable;
 use Doctrine\ORM\Mapping as ORM;
 use LogicException;
 use Symfony\Component\Serializer\Annotation as Serializer;
@@ -125,7 +126,7 @@ class Calendar implements TrackCreationInterface, TrackUpdateInterface, HasCente
     private int $dateTimeVersion = 0;
 
     /**
-     * @var Collection<CalendarDoc::class>
+     * @var Collection<CalendarDoc>
      * @ORM\OneToMany(targetEntity=CalendarDoc::class, mappedBy="calendar", orphanRemoval=true)
      */
     private Collection $documents;
@@ -154,8 +155,9 @@ class Calendar implements TrackCreationInterface, TrackUpdateInterface, HasCente
      * )
      * @ORM\JoinTable(name="chill_calendar.calendar_to_invites")
      * @Serializer\Groups({"read", "docgen:read"})
+     * @var Collection&Selectable<int, Invite>
      */
-    private Collection $invites;
+    private Collection&Selectable $invites;
 
     /**
      * @ORM\ManyToOne(targetEntity="Chill\MainBundle\Entity\Location")
@@ -184,6 +186,7 @@ class Calendar implements TrackCreationInterface, TrackUpdateInterface, HasCente
      * @Serializer\Groups({"calendar:read", "read", "calendar:light", "docgen:read"})
      * @Serializer\Context(normalizationContext={"read"}, groups={"calendar:light"})
      * @Assert\Count(min=1, minMessage="calendar.At least {{ limit }} person is required.")
+     * @var Collection<Person>
      */
     private Collection $persons;
 
@@ -194,6 +197,7 @@ class Calendar implements TrackCreationInterface, TrackUpdateInterface, HasCente
     private PrivateCommentEmbeddable $privateComment;
 
     /**
+     * @var Collection<ThirdParty>
      * @ORM\ManyToMany(targetEntity="Chill\ThirdPartyBundle\Entity\ThirdParty")
      * @ORM\JoinTable(name="chill_calendar.calendar_to_thirdparties")
      * @Serializer\Groups({"calendar:read", "read", "calendar:light", "docgen:read"})
diff --git a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldLongChoice/Option.php b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldLongChoice/Option.php
index 08233886d..39eb7a153 100644
--- a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldLongChoice/Option.php
+++ b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldLongChoice/Option.php
@@ -28,12 +28,12 @@ class Option
     private $active = true;
 
     /**
-     * @var Collection
+     * @var Collection<Option>
      * @ORM\OneToMany(
      *     targetEntity="Chill\CustomFieldsBundle\Entity\CustomFieldLongChoice\Option",
      * mappedBy="parent")
      */
-    private $children;
+    private Collection $children;
 
     /**
      * @var int
diff --git a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php
index 46a48f4b5..c279a6c58 100644
--- a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php
+++ b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php
@@ -35,14 +35,13 @@ class CustomFieldsGroup
      * The custom fields of the group.
      * The custom fields are asc-ordered regarding to their property "ordering".
      *
-     * @var Collection
-     *
+     * @var Collection<CustomField>
      * @ORM\OneToMany(
      *     targetEntity="Chill\CustomFieldsBundle\Entity\CustomField",
      * mappedBy="customFieldGroup")
      * @ORM\OrderBy({"ordering": "ASC"})
      */
-    private $customFields;
+    private Collection $customFields;
 
     /**
      * @var string
diff --git a/src/Bundle/ChillEventBundle/Entity/Event.php b/src/Bundle/ChillEventBundle/Entity/Event.php
index d3ae4d1ca..df62c0ec1 100644
--- a/src/Bundle/ChillEventBundle/Entity/Event.php
+++ b/src/Bundle/ChillEventBundle/Entity/Event.php
@@ -72,12 +72,12 @@ class Event implements HasCenterInterface, HasScopeInterface
     private $name;
 
     /**
-     * @var Participation
+     * @var Collection<Participation>
      * @ORM\OneToMany(
      *     targetEntity="Chill\EventBundle\Entity\Participation",
      * mappedBy="event")
      */
-    private $participations;
+    private Collection $participations;
 
     /**
      * @var EventType
@@ -174,11 +174,11 @@ class Event implements HasCenterInterface, HasScopeInterface
      */
     public function getParticipationsOrdered(): \ArrayIterator|\Traversable
     {
-        $iterator = $this->participations->getIterator();
+        $iterator = iterator_to_array($this->participations->getIterator());
 
-        $iterator->uasort(static fn ($first, $second) => strnatcasecmp($first->getPerson()->getFirstName(), $second->getPerson()->getFirstName()));
+        uasort($iterator, static fn ($first, $second) => strnatcasecmp($first->getPerson()->getFirstName(), $second->getPerson()->getFirstName()));
 
-        return $iterator;
+        return new ArrayIterator($iterator);
     }
 
     /**
diff --git a/src/Bundle/ChillEventBundle/Entity/EventType.php b/src/Bundle/ChillEventBundle/Entity/EventType.php
index e661a9839..3a5f858b3 100644
--- a/src/Bundle/ChillEventBundle/Entity/EventType.php
+++ b/src/Bundle/ChillEventBundle/Entity/EventType.php
@@ -46,20 +46,20 @@ class EventType
     private $name;
 
     /**
-     * @var Collection
+     * @var Collection<Role>
      * @ORM\OneToMany(
      *     targetEntity="Chill\EventBundle\Entity\Role",
      * mappedBy="type")
      */
-    private $roles;
+    private Collection $roles;
 
     /**
-     * @var Collection
+     * @var Collection<Status>
      * @ORM\OneToMany(
      *     targetEntity="Chill\EventBundle\Entity\Status",
      * mappedBy="type")
      */
-    private $statuses;
+    private Collection $statuses;
 
     /**
      * Constructor.
diff --git a/src/Bundle/ChillMainBundle/Entity/Address.php b/src/Bundle/ChillMainBundle/Entity/Address.php
index 52e8d7c62..7a6fec596 100644
--- a/src/Bundle/ChillMainBundle/Entity/Address.php
+++ b/src/Bundle/ChillMainBundle/Entity/Address.php
@@ -110,7 +110,7 @@ class Address implements TrackCreationInterface, TrackUpdateInterface
      * This list is computed by a materialized view. It won't be populated until a refresh is done
      * on the materialized view.
      *
-     * @var Collection<int, GeographicalUnit>|GeographicalUnit[]
+     * @var Collection<GeographicalUnit>
      * @readonly
      * @ORM\ManyToMany(targetEntity=GeographicalUnit::class)
      * @ORM\JoinTable(
diff --git a/src/Bundle/ChillMainBundle/Entity/Center.php b/src/Bundle/ChillMainBundle/Entity/Center.php
index d2be8a776..04695b113 100644
--- a/src/Bundle/ChillMainBundle/Entity/Center.php
+++ b/src/Bundle/ChillMainBundle/Entity/Center.php
@@ -23,14 +23,14 @@ use Symfony\Component\Serializer\Annotation as Serializer;
 class Center implements HasCenterInterface, \Stringable
 {
     /**
-     * @var Collection
+     * @var Collection<GroupCenter>
      *
      * @ORM\OneToMany(
      *     targetEntity="Chill\MainBundle\Entity\GroupCenter",
      *     mappedBy="center"
      * )
      */
-    private $groupCenters;
+    private Collection $groupCenters;
 
     /**
      * @var int
diff --git a/src/Bundle/ChillMainBundle/Entity/GeographicalUnitLayer.php b/src/Bundle/ChillMainBundle/Entity/GeographicalUnitLayer.php
index b856c7a21..cf6d185df 100644
--- a/src/Bundle/ChillMainBundle/Entity/GeographicalUnitLayer.php
+++ b/src/Bundle/ChillMainBundle/Entity/GeographicalUnitLayer.php
@@ -45,6 +45,7 @@ class GeographicalUnitLayer
     private string $refId = '';
 
     /**
+     * @var Collection<GeographicalUnit>
      * @ORM\OneToMany(targetEntity=GeographicalUnit::class, mappedBy="layer")
      */
     private Collection $units;
diff --git a/src/Bundle/ChillMainBundle/Entity/Notification.php b/src/Bundle/ChillMainBundle/Entity/Notification.php
index dc81b1b54..3e5e7f9b5 100644
--- a/src/Bundle/ChillMainBundle/Entity/Notification.php
+++ b/src/Bundle/ChillMainBundle/Entity/Notification.php
@@ -42,6 +42,7 @@ class Notification implements TrackUpdateInterface
     private array $addedAddresses = [];
 
     /**
+     * @var Collection<User>
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_main_notification_addresses_user")
      */
@@ -65,6 +66,7 @@ class Notification implements TrackUpdateInterface
     private ?ArrayCollection $addressesOnLoad = null;
 
     /**
+     * @var Collection<NotificationComment>
      * @ORM\OneToMany(targetEntity=NotificationComment::class, mappedBy="notification", orphanRemoval=true)
      * @ORM\OrderBy({"createdAt": "ASC"})
      */
@@ -112,6 +114,7 @@ class Notification implements TrackUpdateInterface
     private string $title = '';
 
     /**
+     * @var Collection<User>
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_main_notification_addresses_unread")
      */
diff --git a/src/Bundle/ChillMainBundle/Entity/PermissionsGroup.php b/src/Bundle/ChillMainBundle/Entity/PermissionsGroup.php
index a32fa978b..336de9797 100644
--- a/src/Bundle/ChillMainBundle/Entity/PermissionsGroup.php
+++ b/src/Bundle/ChillMainBundle/Entity/PermissionsGroup.php
@@ -32,14 +32,13 @@ class PermissionsGroup
     private $flags = [];
 
     /**
-     * @var Collection
-     *
+     * @var Collection<GroupCenter>
      * @ORM\OneToMany(
      *     targetEntity="Chill\MainBundle\Entity\GroupCenter",
      *     mappedBy="permissionsGroup"
      * )
      */
-    private $groupCenters;
+    private Collection $groupCenters;
 
     /**
      * @var int
@@ -58,15 +57,14 @@ class PermissionsGroup
     private $name;
 
     /**
-     * @var Collection
-     *
+     * @var Collection<RoleScope>
      * @ORM\ManyToMany(
      *     targetEntity="Chill\MainBundle\Entity\RoleScope",
      *     inversedBy="permissionsGroups",
      * cascade={ "persist" })
      * @ORM\Cache(usage="NONSTRICT_READ_WRITE")
      */
-    private $roleScopes;
+    private Collection $roleScopes;
 
     /**
      * PermissionsGroup constructor.
diff --git a/src/Bundle/ChillMainBundle/Entity/RoleScope.php b/src/Bundle/ChillMainBundle/Entity/RoleScope.php
index b2afe9117..00356ebec 100644
--- a/src/Bundle/ChillMainBundle/Entity/RoleScope.php
+++ b/src/Bundle/ChillMainBundle/Entity/RoleScope.php
@@ -30,13 +30,13 @@ class RoleScope
     private ?int $id = null;
 
     /**
-     * @var Collection
+     * @var Collection<PermissionsGroup>
      *
      * @ORM\ManyToMany(
      *     targetEntity="Chill\MainBundle\Entity\PermissionsGroup",
      * mappedBy="roleScopes")
      */
-    private $permissionsGroups;
+    private Collection $permissionsGroups;
 
     /**
      * @ORM\Column(type="string", length=255)
diff --git a/src/Bundle/ChillMainBundle/Entity/Scope.php b/src/Bundle/ChillMainBundle/Entity/Scope.php
index df4f75e4c..928b5915f 100644
--- a/src/Bundle/ChillMainBundle/Entity/Scope.php
+++ b/src/Bundle/ChillMainBundle/Entity/Scope.php
@@ -51,14 +51,14 @@ class Scope
     private array $name = [];
 
     /**
-     * @var Collection
+     * @var Collection<RoleScope>
      *
      * @ORM\OneToMany(
      *     targetEntity="Chill\MainBundle\Entity\RoleScope",
      * mappedBy="scope")
      * @ORM\Cache(usage="NONSTRICT_READ_WRITE")
      */
-    private $roleScopes;
+    private Collection $roleScopes;
 
     /**
      * Scope constructor.
diff --git a/src/Bundle/ChillMainBundle/Entity/User.php b/src/Bundle/ChillMainBundle/Entity/User.php
index ebf7d95e1..1240ecd22 100644
--- a/src/Bundle/ChillMainBundle/Entity/User.php
+++ b/src/Bundle/ChillMainBundle/Entity/User.php
@@ -83,6 +83,7 @@ class User implements UserInterface, \Stringable
     private bool $enabled = true;
 
     /**
+     * @var Collection<GroupCenter>
      * @ORM\ManyToMany(
      *     targetEntity="Chill\MainBundle\Entity\GroupCenter",
      * inversedBy="users")
diff --git a/src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflow.php b/src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflow.php
index 8dfc400f7..a5cbfa24b 100644
--- a/src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflow.php
+++ b/src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflow.php
@@ -75,7 +75,7 @@ class EntityWorkflow implements TrackCreationInterface, TrackUpdateInterface
     /**
      * @ORM\OneToMany(targetEntity=EntityWorkflowComment::class, mappedBy="entityWorkflow", orphanRemoval=true)
      *
-     * @var Collection|EntityWorkflowComment[]
+     * @var Collection<EntityWorkflowComment>
      */
     private Collection $comments;
 
@@ -100,7 +100,7 @@ class EntityWorkflow implements TrackCreationInterface, TrackUpdateInterface
      * @ORM\OneToMany(targetEntity=EntityWorkflowStep::class, mappedBy="entityWorkflow", orphanRemoval=true, cascade={"persist"})
      * @ORM\OrderBy({"transitionAt": "ASC", "id": "ASC"})
      * @Assert\Valid(traverse=true)
-     * @var Collection|EntityWorkflowStep[]
+     * @var Collection<EntityWorkflowStep>
      */
     private Collection $steps;
 
@@ -113,7 +113,7 @@ class EntityWorkflow implements TrackCreationInterface, TrackUpdateInterface
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_main_workflow_entity_subscriber_to_final")
      *
-     * @var Collection|User[]
+     * @var Collection<User>
      */
     private Collection $subscriberToFinal;
 
@@ -121,7 +121,7 @@ class EntityWorkflow implements TrackCreationInterface, TrackUpdateInterface
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_main_workflow_entity_subscriber_to_step")
      *
-     * @var Collection|User[]
+     * @var Collection<User>
      */
     private Collection $subscriberToStep;
 
diff --git a/src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflowStep.php b/src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflowStep.php
index 75d055ce3..bc3c9c028 100644
--- a/src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflowStep.php
+++ b/src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflowStep.php
@@ -33,6 +33,7 @@ class EntityWorkflowStep
     private string $accessKey;
 
     /**
+     * @var Collection<User>
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_main_workflow_entity_step_cc_user")
      */
@@ -54,12 +55,14 @@ class EntityWorkflowStep
     private array $destEmail = [];
 
     /**
+     * @var Collection<User>
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_main_workflow_entity_step_user")
      */
     private Collection $destUser;
 
     /**
+     * @var Collection<User>
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_main_workflow_entity_step_user_by_accesskey")
      */
diff --git a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
index 2af71c120..731c9f7a5 100644
--- a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
+++ b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php
@@ -11,6 +11,7 @@ declare(strict_types=1);
 
 namespace Chill\PersonBundle\Entity;
 
+use Chill\CalendarBundle\Entity\Calendar;
 use Chill\MainBundle\Doctrine\Model\TrackCreationInterface;
 use Chill\MainBundle\Doctrine\Model\TrackUpdateInterface;
 use Chill\MainBundle\Entity\Address;
@@ -43,6 +44,7 @@ use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\Common\Collections\ReadableCollection;
+use Doctrine\Common\Collections\Selectable;
 use Doctrine\ORM\Mapping as ORM;
 use Iterator;
 use LogicException;
@@ -150,13 +152,12 @@ class AccompanyingPeriod implements
     private ?Location $administrativeLocation = null;
 
     /**
+     * @var Collection&Selectable<int, Calendar>
      * @ORM\OneToMany(targetEntity="Chill\CalendarBundle\Entity\Calendar", mappedBy="accompanyingPeriod")
      */
-    private Collection $calendars;
+    private Collection&Selectable $calendars;
 
     /**
-     * @var DateTime
-     *
      * @ORM\Column(type="date", nullable=true)
      * @Groups({"read", "write", "docgen:read"})
      * @Assert\NotBlank(groups={AccompanyingPeriod::STEP_CLOSED})
@@ -242,6 +243,7 @@ class AccompanyingPeriod implements
     private ?UserJob $job = null;
 
     /**
+     * @var Collection<AccompanyingPeriodLocationHistory>
      * @ORM\OneToMany(targetEntity=AccompanyingPeriodLocationHistory::class,
      * mappedBy="period", cascade={"persist", "remove"}, orphanRemoval=true)
      */
@@ -320,6 +322,7 @@ class AccompanyingPeriod implements
     private ?ThirdParty $requestorThirdParty = null;
 
     /**
+     * @var Collection<Resource>
      * @ORM\OneToMany(
      *     targetEntity="Chill\PersonBundle\Entity\AccompanyingPeriod\Resource",
      *     mappedBy="accompanyingPeriod",
@@ -332,6 +335,7 @@ class AccompanyingPeriod implements
     private Collection $resources;
 
     /**
+     * @var Collection<Scope>
      * @ORM\ManyToMany(
      *     targetEntity=Scope::class,
      *     cascade={}
@@ -347,6 +351,7 @@ class AccompanyingPeriod implements
     private Collection $scopes;
 
     /**
+     * @var Collection<SocialIssue>
      * @ORM\ManyToMany(
      *     targetEntity=SocialIssue::class
      * )
@@ -366,6 +371,7 @@ class AccompanyingPeriod implements
     private string $step = self::STEP_DRAFT;
 
     /**
+     * @var Collection<AccompanyingPeriodStepHistory>
      * @ORM\OneToMany(targetEntity=AccompanyingPeriodStepHistory::class,
      * mappedBy="period", cascade={"persist", "remove"}, orphanRemoval=true)
      */
@@ -394,7 +400,7 @@ class AccompanyingPeriod implements
      * @ORM\OneToMany(targetEntity=UserHistory::class, mappedBy="accompanyingPeriod", orphanRemoval=true,
      * cascade={"persist", "remove"})
      *
-     * @var Collection|UserHistory[]
+     * @var Collection<UserHistory>
      */
     private Collection $userHistories;
 
@@ -408,6 +414,7 @@ class AccompanyingPeriod implements
     private ?User $userPrevious = null;
 
     /**
+     * @var Collection<AccompanyingPeriodWork>
      * @ORM\OneToMany(
      *     targetEntity=AccompanyingPeriodWork::class,
      *     mappedBy="accompanyingPeriod"
@@ -812,7 +819,7 @@ class AccompanyingPeriod implements
         return 'none';
     }
 
-    public function getNextCalendarsForPerson(Person $person, $limit = 5): Collection
+    public function getNextCalendarsForPerson(Person $person, $limit = 5): ReadableCollection
     {
         $today = new DateTimeImmutable('today');
         $criteria = Criteria::create()
diff --git a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/AccompanyingPeriodWork.php b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/AccompanyingPeriodWork.php
index e3b2883be..afbb91963 100644
--- a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/AccompanyingPeriodWork.php
+++ b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/AccompanyingPeriodWork.php
@@ -102,6 +102,7 @@ class AccompanyingPeriodWork implements AccompanyingPeriodLinkedWithSocialIssues
     private ?DateTimeImmutable $endDate = null;
 
     /**
+     * @var Collection<AccompanyingPeriodWorkGoal>
      * @ORM\OneToMany(
      *     targetEntity=AccompanyingPeriodWorkGoal::class,
      *     mappedBy="accompanyingPeriodWork",
@@ -137,6 +138,7 @@ class AccompanyingPeriodWork implements AccompanyingPeriodLinkedWithSocialIssues
     private string $note = '';
 
     /**
+     * @var Collection<Person>
      * @ORM\ManyToMany(targetEntity=Person::class)
      * @ORM\JoinTable(name="chill_person_accompanying_period_work_person")
      * @Serializer\Groups({"read", "docgen:read", "read:accompanyingPeriodWork:light"})
@@ -152,6 +154,7 @@ class AccompanyingPeriodWork implements AccompanyingPeriodLinkedWithSocialIssues
     private PrivateCommentEmbeddable $privateComment;
 
     /**
+     * @var Collection<User>
      * @ORM\ManyToMany(targetEntity=User::class)
      * @ORM\JoinTable(name="chill_person_accompanying_period_work_referrer")
      * @Serializer\Groups({"read", "docgen:read", "read:accompanyingPeriodWork:light"})
@@ -161,6 +164,7 @@ class AccompanyingPeriodWork implements AccompanyingPeriodLinkedWithSocialIssues
     private Collection $referrers;
 
     /**
+     * @var Collection<Result>
      * @ORM\ManyToMany(targetEntity=Result::class, inversedBy="accompanyingPeriodWorks")
      * @ORM\JoinTable(name="chill_person_accompanying_period_work_result")
      * @Serializer\Groups({"read", "docgen:read"})
@@ -185,6 +189,7 @@ class AccompanyingPeriodWork implements AccompanyingPeriodLinkedWithSocialIssues
     private ?DateTimeImmutable $startDate = null;
 
     /**
+     * @var Collection<ThirdParty>
      * @ORM\ManyToMany(targetEntity=ThirdParty::class)
      * @ORM\JoinTable(name="chill_person_accompanying_period_work_third_party")
      *
diff --git a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/AccompanyingPeriodWorkGoal.php b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/AccompanyingPeriodWorkGoal.php
index 9222a66b8..a8fefd4f2 100644
--- a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/AccompanyingPeriodWorkGoal.php
+++ b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/AccompanyingPeriodWorkGoal.php
@@ -59,6 +59,7 @@ class AccompanyingPeriodWorkGoal
     private ?string $note = null;
 
     /**
+     * @var Collection<Result>
      * @ORM\ManyToMany(targetEntity=Result::class, inversedBy="accompanyingPeriodWorkGoals")
      * @ORM\JoinTable(name="chill_person_accompanying_period_work_goal_result")
      * @Serializer\Groups({"accompanying_period_work:edit"})
diff --git a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/ClosingMotive.php b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/ClosingMotive.php
index 08dca4537..48adb1c6b 100644
--- a/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/ClosingMotive.php
+++ b/src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/ClosingMotive.php
@@ -32,6 +32,7 @@ class ClosingMotive
     /**
      * Child Accompanying periods.
      *
+     * @var Collection<ClosingMotive>
      * @ORM\OneToMany(
      *     targetEntity="Chill\PersonBundle\Entity\AccompanyingPeriod\ClosingMotive",
      * mappedBy="parent")
diff --git a/src/Bundle/ChillPersonBundle/Entity/Household/Household.php b/src/Bundle/ChillPersonBundle/Entity/Household/Household.php
index 74b8ed5f8..864635acf 100644
--- a/src/Bundle/ChillPersonBundle/Entity/Household/Household.php
+++ b/src/Bundle/ChillPersonBundle/Entity/Household/Household.php
@@ -23,6 +23,7 @@ use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\Common\Collections\ReadableCollection;
+use Doctrine\Common\Collections\Selectable;
 use Doctrine\ORM\Mapping as ORM;
 use Symfony\Component\Serializer\Annotation as Serializer;
 use Symfony\Component\Validator\Constraints as Assert;
@@ -45,6 +46,7 @@ class Household
     /**
      * Addresses.
      *
+     * @var Collection<Address>
      * @ORM\ManyToMany(
      *     targetEntity="Chill\MainBundle\Entity\Address",
      * cascade={"persist", "remove", "merge", "detach"})
@@ -60,6 +62,7 @@ class Household
     private CommentEmbeddable $commentMembers;
 
     /**
+     * @var Collection&Selectable<int, HouseholdComposition>
      * @ORM\OneToMany(
      *     targetEntity=HouseholdComposition::class,
      *     mappedBy="household",
@@ -69,7 +72,7 @@ class Household
      * @ORM\OrderBy({"startDate": "DESC"})
      * @Assert\Valid(traverse=true, groups={"household_composition"})
      */
-    private Collection $compositions;
+    private Collection&Selectable $compositions;
 
     /**
      * @ORM\Id
@@ -80,6 +83,7 @@ class Household
     private ?int $id = null;
 
     /**
+     * @var Collection<HouseholdMember>
      * @ORM\OneToMany(
      *     targetEntity=HouseholdMember::class,
      *     mappedBy="household"
@@ -146,9 +150,9 @@ class Household
      *
      * @Assert\Callback(methods={"validate"})
      *
-     * @return \Chill\MainBundle\Entity\Address[]
+     * @return Collection<Address>
      */
-    public function getAddresses()
+    public function getAddresses(): Collection
     {
         return $this->addresses;
     }
diff --git a/src/Bundle/ChillPersonBundle/Entity/Person.php b/src/Bundle/ChillPersonBundle/Entity/Person.php
index ac8988c26..a7be686f7 100644
--- a/src/Bundle/ChillPersonBundle/Entity/Person.php
+++ b/src/Bundle/ChillPersonBundle/Entity/Person.php
@@ -14,6 +14,7 @@ namespace Chill\PersonBundle\Entity;
 use ArrayIterator;
 use Chill\BudgetBundle\Entity\Charge;
 use Chill\BudgetBundle\Entity\Resource;
+use Chill\CalendarBundle\Entity\Calendar;
 use Chill\MainBundle\Doctrine\Model\TrackCreationInterface;
 use Chill\MainBundle\Doctrine\Model\TrackUpdateInterface;
 use Chill\MainBundle\Entity\Address;
@@ -22,6 +23,7 @@ use Chill\MainBundle\Entity\Civility;
 use Chill\MainBundle\Entity\Country;
 use Chill\MainBundle\Entity\Embeddable\CommentEmbeddable;
 use Chill\MainBundle\Entity\HasCenterInterface;
+use Chill\MainBundle\Entity\Language;
 use Chill\MainBundle\Entity\User;
 use Chill\MainBundle\Validation\Constraint\PhonenumberConstraint;
 use Chill\PersonBundle\Entity\Household\Household;
@@ -110,14 +112,14 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     /**
      * The person's accompanying periods (when the person was accompanied by the center).
      *
-     * @var Collection
+     * @var Collection<AccompanyingPeriodParticipation>
      *
      * @ORM\OneToMany(targetEntity=AccompanyingPeriodParticipation::class,
      *     mappedBy="person",
      * cascade={"persist", "remove", "merge", "detach"})
      * @ORM\OrderBy({"startDate": "DESC"})
      */
-    private $accompanyingPeriodParticipations;
+    private Collection $accompanyingPeriodParticipations;
 
     /**
      * The accompanying period requested by the Person.
@@ -125,14 +127,14 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
      * @ORM\OneToMany(targetEntity=AccompanyingPeriod::class,
      * mappedBy="requestorPerson")
      *
-     * @var AccompanyingPeriod[]|Collection
+     * @var Collection<AccompanyingPeriod>
      */
     private Collection $accompanyingPeriodRequested;
 
     /**
      * Addresses.
      *
-     * @var Collection
+     * @var Collection<Address>
      *
      * @ORM\ManyToMany(
      *     targetEntity="Chill\MainBundle\Entity\Address",
@@ -140,10 +142,10 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
      * @ORM\JoinTable(name="chill_person_persons_to_addresses")
      * @ORM\OrderBy({"validFrom": "DESC"})
      */
-    private $addresses;
+    private Collection $addresses;
 
     /**
-     * @var Collection
+     * @var Collection<PersonAltName>
      *
      * @ORM\OneToMany(
      *     targetEntity="Chill\PersonBundle\Entity\PersonAltName",
@@ -151,7 +153,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
      *     cascade={"persist", "remove", "merge", "detach"},
      * orphanRemoval=true)
      */
-    private $altNames;
+    private Collection $altNames;
 
     /**
      * The person's birthdate.
@@ -164,6 +166,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     private $birthdate;
 
     /**
+     * @var Collection<Charge>
      * @ORM\OneToMany(
      *     targetEntity=Charge::class,
      *     mappedBy="person"
@@ -172,6 +175,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     private Collection $budgetCharges;
 
     /**
+     * @var Collection<Resource>
      * @ORM\OneToMany(
      *     targetEntity=Resource::class,
      *     mappedBy="person"
@@ -180,6 +184,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     private Collection $budgetResources;
 
     /**
+     * @var Collection<Calendar>
      * @ORM\ManyToMany(
      *     targetEntity="Chill\CalendarBundle\Entity\Calendar",
      *     mappedBy="persons"
@@ -204,7 +209,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     /**
      * @ORM\OneToMany(targetEntity=PersonCenterHistory::class, mappedBy="person", cascade={"persist"})
      *
-     * @var Collection|PersonCenterHistory[]
+     * @var Collection<PersonCenterHistory>
      */
     private Collection $centerHistory;
 
@@ -342,6 +347,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     /**
      * Read-only field, computed by the database.
      *
+     * @var Collection<PersonHouseholdAddress>
      * @ORM\OneToMany(
      *     targetEntity=PersonHouseholdAddress::class,
      *     mappedBy="person"
@@ -355,7 +361,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
      *     mappedBy="person"
      * )
      *
-     * @var Collection|HouseholdMember[]
+     * @var Collection<HouseholdMember>
      */
     private Collection $householdParticipations;
 
@@ -446,7 +452,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     private ?int $numberOfChildren = null;
 
     /**
-     * @var Collection
+     * @var Collection<PersonPhone>
      *
      * @ORM\OneToMany(
      *     targetEntity="Chill\PersonBundle\Entity\PersonPhone",
@@ -458,13 +464,14 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
      *     traverse=true,
      * )
      */
-    private $otherPhoneNumbers;
+    private Collection $otherPhoneNumbers;
 
     /**
      * @ORM\OneToMany(
      *     targetEntity=AccompanyingPeriod::class,
      *     mappedBy="personLocation"
      * )
+     * @var Collection<AccompanyingPeriod>
      */
     private Collection $periodLocatedOn;
 
@@ -499,14 +506,14 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     /**
      * @ORM\OneToMany(targetEntity=PersonResource::class, mappedBy="personOwner")
      *
-     * @var Collection|PersonResource[];
+     * @var Collection<PersonResource>
      */
     private Collection $resources;
 
     /**
      * The person's spoken languages.
      *
-     * @var ArrayCollection
+     * @var Collection<Language>
      *
      * @ORM\ManyToMany(targetEntity="Chill\MainBundle\Entity\Language")
      * @ORM\JoinTable(
@@ -515,7 +522,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
      *     inverseJoinColumns={@ORM\JoinColumn(name="language_id", referencedColumnName="id")}
      * )
      */
-    private $spokenLanguages;
+    private Collection $spokenLanguages;
 
     /**
      * @ORM\Column(type="datetime", nullable=true, options={"default": NULL})
@@ -1361,7 +1368,7 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
     /**
      * Get spokenLanguages.
      *
-     * @return ArrayCollection
+     * @return Collection<Language>
      */
     public function getSpokenLanguages()
     {
diff --git a/src/Bundle/ChillPersonBundle/Entity/SocialWork/Evaluation.php b/src/Bundle/ChillPersonBundle/Entity/SocialWork/Evaluation.php
index 08dc0f425..6c6b07985 100644
--- a/src/Bundle/ChillPersonBundle/Entity/SocialWork/Evaluation.php
+++ b/src/Bundle/ChillPersonBundle/Entity/SocialWork/Evaluation.php
@@ -52,6 +52,7 @@ class Evaluation
     private ?DateInterval $notificationDelay = null;
 
     /**
+     * @var Collection<SocialAction>
      * @ORM\ManyToMany(
      *     targetEntity=SocialAction::class,
      *     mappedBy="evaluations"
diff --git a/src/Bundle/ChillPersonBundle/Entity/SocialWork/Goal.php b/src/Bundle/ChillPersonBundle/Entity/SocialWork/Goal.php
index a51ba1a59..a6e54908f 100644
--- a/src/Bundle/ChillPersonBundle/Entity/SocialWork/Goal.php
+++ b/src/Bundle/ChillPersonBundle/Entity/SocialWork/Goal.php
@@ -43,12 +43,14 @@ class Goal
     private ?int $id = null;
 
     /**
+     * @var Collection<Result>
      * @ORM\ManyToMany(targetEntity=Result::class, inversedBy="goals")
      * @ORM\JoinTable(name="chill_person_social_work_goal_result")
      */
     private Collection $results;
 
     /**
+     * @var Collection<SocialAction>
      * @ORM\ManyToMany(targetEntity=SocialAction::class, mappedBy="goals")
      */
     private Collection $socialActions;
diff --git a/src/Bundle/ChillPersonBundle/Entity/SocialWork/Result.php b/src/Bundle/ChillPersonBundle/Entity/SocialWork/Result.php
index f65192a04..aa7638ca3 100644
--- a/src/Bundle/ChillPersonBundle/Entity/SocialWork/Result.php
+++ b/src/Bundle/ChillPersonBundle/Entity/SocialWork/Result.php
@@ -33,11 +33,13 @@ use Symfony\Component\Serializer\Annotation as Serializer;
 class Result
 {
     /**
+     * @var Collection<AccompanyingPeriodWorkGoal>
      * @ORM\ManyToMany(targetEntity=AccompanyingPeriodWorkGoal::class, mappedBy="results")
      */
     private Collection $accompanyingPeriodWorkGoals;
 
     /**
+     * @var Collection<AccompanyingPeriodWork>
      * @ORM\ManyToMany(targetEntity=AccompanyingPeriodWork::class, mappedBy="results")
      */
     private Collection $accompanyingPeriodWorks;
@@ -48,6 +50,7 @@ class Result
     private ?DateTime $desactivationDate = null;
 
     /**
+     * @var Collection<Goal>
      * @ORM\ManyToMany(targetEntity=Goal::class, mappedBy="results")
      */
     private Collection $goals;
@@ -61,6 +64,7 @@ class Result
     private ?int $id = null;
 
     /**
+     * @var Collection<SocialAction>
      * @ORM\ManyToMany(targetEntity=SocialAction::class, mappedBy="results")
      */
     private Collection $socialActions;
diff --git a/src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialAction.php b/src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialAction.php
index fb40b8ce9..a837c8958 100644
--- a/src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialAction.php
+++ b/src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialAction.php
@@ -32,9 +32,10 @@ use Symfony\Component\Serializer\Annotation as Serializer;
 class SocialAction
 {
     /**
+     * @var Collection<SocialAction>
      * @ORM\OneToMany(targetEntity=SocialAction::class, mappedBy="parent")
      */
-    private $children;
+    private Collection $children;
 
     /**
      * @ORM\Column(type="dateinterval", nullable=true)
@@ -47,16 +48,18 @@ class SocialAction
     private $desactivationDate;
 
     /**
+     * @var Collection<Evaluation>
      * @ORM\ManyToMany(targetEntity=Evaluation::class, inversedBy="socialActions")
      * @ORM\JoinTable(name="chill_person_social_work_evaluation_action")
      */
     private Collection $evaluations;
 
     /**
+     * @var Collection<Goal>
      * @ORM\ManyToMany(targetEntity=Goal::class, inversedBy="socialActions")
      * @ORM\JoinTable(name="chill_person_social_action_goal")
      */
-    private $goals;
+    private Collection $goals;
 
     /**
      * @ORM\Id
@@ -81,10 +84,11 @@ class SocialAction
     private $parent;
 
     /**
+     * @var Collection<Result>
      * @ORM\ManyToMany(targetEntity=Result::class, inversedBy="socialActions")
      * @ORM\JoinTable(name="chill_person_social_action_result")
      */
-    private $results;
+    private Collection $results;
 
     /**
      * @ORM\Column(type="json")
diff --git a/src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialIssue.php b/src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialIssue.php
index 2cd22a3d2..3a03d2e16 100644
--- a/src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialIssue.php
+++ b/src/Bundle/ChillPersonBundle/Entity/SocialWork/SocialIssue.php
@@ -28,9 +28,10 @@ use Symfony\Component\Serializer\Annotation\Groups;
 class SocialIssue
 {
     /**
+     * @var Collection<SocialIssue>
      * @ORM\OneToMany(targetEntity=SocialIssue::class, mappedBy="parent")
      */
-    private $children;
+    private Collection $children;
 
     /**
      * @ORM\Column(type="datetime", nullable=true)
@@ -55,9 +56,10 @@ class SocialIssue
     private $parent;
 
     /**
+     * @var Collection<SocialAction>
      * @ORM\OneToMany(targetEntity=SocialAction::class, mappedBy="issue")
      */
-    private $socialActions;
+    private Collection $socialActions;
 
     /**
      * @ORM\Column(type="json")
diff --git a/src/Bundle/ChillTaskBundle/Entity/RecurringTask.php b/src/Bundle/ChillTaskBundle/Entity/RecurringTask.php
index 676e22a99..6751466d5 100644
--- a/src/Bundle/ChillTaskBundle/Entity/RecurringTask.php
+++ b/src/Bundle/ChillTaskBundle/Entity/RecurringTask.php
@@ -69,7 +69,7 @@ class RecurringTask extends AbstractTask
     private $occurenceWarningInterval;
 
     /**
-     * @var Collection
+     * @var Collection<SingleTask>
      *
      * @ORM\OneToMany(
      *     targetEntity="SingleTask",
diff --git a/src/Bundle/ChillTaskBundle/Entity/SingleTask.php b/src/Bundle/ChillTaskBundle/Entity/SingleTask.php
index cd63f9db5..23dc7a5e1 100644
--- a/src/Bundle/ChillTaskBundle/Entity/SingleTask.php
+++ b/src/Bundle/ChillTaskBundle/Entity/SingleTask.php
@@ -11,6 +11,7 @@ declare(strict_types=1);
 
 namespace Chill\TaskBundle\Entity;
 
+use Chill\TaskBundle\Entity\Task\SingleTaskPlaceEvent;
 use DateInterval;
 use DateTime;
 use DateTimeImmutable;
@@ -92,14 +93,14 @@ class SingleTask extends AbstractTask
     private $startDate;
 
     /**
-     * @var \Doctrine\Common\Collections\Collection
+     * @var Collection<SingleTaskPlaceEvent>
      * @ORM\OneToMany(
      *     targetEntity="\Chill\TaskBundle\Entity\Task\SingleTaskPlaceEvent",
      *     mappedBy="task",
      *     cascade={ "remove" }
      * )
      */
-    private $taskPlaceEvents;
+    private Collection $taskPlaceEvents;
 
     /**
      * @var DateInterval
diff --git a/src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php b/src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php
index b8ea8126c..99982acdf 100644
--- a/src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php
+++ b/src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php
@@ -132,7 +132,7 @@ class ThirdParty implements TrackCreationInterface, TrackUpdateInterface, \Strin
     private ?string $canonicalized = '';
 
     /**
-     * @var ThirdPartyCategory
+     * @var Collection<ThirdPartyCategory>
      * @ORM\ManyToMany(targetEntity="Chill\ThirdPartyBundle\Entity\ThirdPartyCategory")
      * @ORM\JoinTable(name="chill_3party.thirdparty_category",
      *     joinColumns={@ORM\JoinColumn(name="thirdparty_id", referencedColumnName="id")},
@@ -143,6 +143,7 @@ class ThirdParty implements TrackCreationInterface, TrackUpdateInterface, \Strin
     private Collection $categories;
 
     /**
+     * @var Collection<Center>
      * @ORM\ManyToMany(targetEntity="\Chill\MainBundle\Entity\Center")
      * @ORM\JoinTable(name="chill_3party.party_center")
      */
@@ -154,7 +155,7 @@ class ThirdParty implements TrackCreationInterface, TrackUpdateInterface, \Strin
      * @ORM\OneToMany(targetEntity="Chill\ThirdPartyBundle\Entity\ThirdParty", mappedBy="parent",
      * cascade={"persist"}, orphanRemoval=true)
      *
-     * @var Collection<(int|string), ThirdParty>
+     * @var Collection<ThirdParty>
      * @Assert\Valid(traverse=true)
      */
     private Collection $children;