diff --git a/Models/KanbanBoard.php b/Models/KanbanBoard.php
index 85e05fa..f963525 100644
--- a/Models/KanbanBoard.php
+++ b/Models/KanbanBoard.php
@@ -126,6 +126,9 @@ class KanbanBoard implements \JsonSerializable
         return false;
     }
 
+    /**
+     * {@inheritdoc}
+     */
     public function jsonSerialize() : array
     {
         return [];
diff --git a/Models/KanbanBoardMapper.php b/Models/KanbanBoardMapper.php
index 337e204..e285ca2 100644
--- a/Models/KanbanBoardMapper.php
+++ b/Models/KanbanBoardMapper.php
@@ -49,6 +49,11 @@ final class KanbanBoardMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
+     */    /**
+     * Has many relation.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
      */
     protected static $hasMany = [
         'columns' => [
@@ -59,6 +64,12 @@ final class KanbanBoardMapper extends DataMapperAbstract
         ],
     ];
 
+    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
+     */
     protected static $belongsTo = [
         'createdBy' => [
             'mapper' => AccountMapper::class,
diff --git a/Models/KanbanCard.php b/Models/KanbanCard.php
index 3b58830..25651c8 100644
--- a/Models/KanbanCard.php
+++ b/Models/KanbanCard.php
@@ -192,6 +192,9 @@ class KanbanCard implements \JsonSerializable
         $this->labels[] = $label;
     }
 
+    /**
+     * {@inheritdoc}
+     */
     public function jsonSerialize() : array
     {
         return [
diff --git a/Models/KanbanCardComment.php b/Models/KanbanCardComment.php
index 9d7e409..a474d85 100644
--- a/Models/KanbanCardComment.php
+++ b/Models/KanbanCardComment.php
@@ -92,6 +92,9 @@ class KanbanCardComment implements \JsonSerializable
         $this->media[] = $media;
     }
 
+    /**
+     * {@inheritdoc}
+     */
     public function jsonSerialize() : array
     {
         return [];
diff --git a/Models/KanbanCardCommentMapper.php b/Models/KanbanCardCommentMapper.php
index f2d3463..0a32573 100644
--- a/Models/KanbanCardCommentMapper.php
+++ b/Models/KanbanCardCommentMapper.php
@@ -47,6 +47,11 @@ final class KanbanCardCommentMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
+     */    /**
+     * Has many relation.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
      */
     protected static $hasMany = [
         'media' => [
diff --git a/Models/KanbanCardMapper.php b/Models/KanbanCardMapper.php
index df83394..36cee3f 100644
--- a/Models/KanbanCardMapper.php
+++ b/Models/KanbanCardMapper.php
@@ -48,6 +48,12 @@ final class KanbanCardMapper extends DataMapperAbstract
         'kanban_card_created_by'  => ['name' => 'kanban_card_created_by', 'type' => 'int', 'internal' => 'createdBy'],
     ];
 
+    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
+     */
     protected static $belongsTo = [
         'createdBy' => [
             'mapper' => AccountMapper::class,
@@ -60,6 +66,11 @@ final class KanbanCardMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
+     */    /**
+     * Has many relation.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
      */
     protected static $hasMany = [
         'media'    => [
diff --git a/Models/KanbanColumn.php b/Models/KanbanColumn.php
index 01d1b6d..2467563 100644
--- a/Models/KanbanColumn.php
+++ b/Models/KanbanColumn.php
@@ -94,6 +94,9 @@ class KanbanColumn implements \JsonSerializable
         return false;
     }
 
+    /**
+     * {@inheritdoc}
+     */
     public function jsonSerialize() : array
     {
         return [];
diff --git a/Models/KanbanColumnMapper.php b/Models/KanbanColumnMapper.php
index b0a2c52..36fb560 100644
--- a/Models/KanbanColumnMapper.php
+++ b/Models/KanbanColumnMapper.php
@@ -45,6 +45,11 @@ final class KanbanColumnMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, null|string>>
      * @since 1.0.0
+     */    /**
+     * Has many relation.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
      */
     protected static $hasMany = [
         'cards' => [