diff --git a/Models/Task.php b/Models/Task.php
index 99f47e9..224f743 100644
--- a/Models/Task.php
+++ b/Models/Task.php
@@ -20,8 +20,8 @@ use phpOMS\Datatypes\Exception\InvalidEnumValue;
 /**
  * Task class.
  *
- * @category   Modules
- * @package    Tasks
+ * @category   Tasks
+ * @package    Modules
  * @author     OMS Development Team <dev@oms.com>
  * @author     Dennis Eichhorn <d.eichhorn@oms.com>
  * @license    OMS License 1.0
@@ -111,6 +111,12 @@ class Task
      */
     private $taskElements = [];
 
+    /**
+     * Schedule
+     *
+     * @var Schedule
+     * @since 1.0.0
+     */
     private $schedule = null;
 
     /**
@@ -380,6 +386,14 @@ class Task
         return $this->type;
     }
 
+    /**
+     * Get schedule.
+     *
+     * @return Schedule
+     *
+     * @since  1.0.0
+     * @author Dennis Eichhorn <d.eichhorn@oms.com>
+     */
     public function getSchedule() : Schedule {
         return $this->schedule;
     }
diff --git a/Models/TaskElementMapper.php b/Models/TaskElementMapper.php
index 4f5ff56..eb7d99e 100644
--- a/Models/TaskElementMapper.php
+++ b/Models/TaskElementMapper.php
@@ -16,8 +16,18 @@
 namespace Modules\Tasks\Models;
 
 use phpOMS\DataStorage\Database\DataMapperAbstract;
-use phpOMS\DataStorage\Database\Query\Builder;
 
+/**
+ * Mapper class.
+ *
+ * @category   Tasks
+ * @package    Modules
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @license    OMS License 1.0
+ * @link       http://orange-management.com
+ * @since      1.0.0
+ */
 class TaskElementMapper extends DataMapperAbstract
 {
 
@@ -46,6 +56,12 @@ class TaskElementMapper extends DataMapperAbstract
      */
     protected static $table = 'task_element';
 
+    /**
+     * Created at.
+     *
+     * @var string
+     * @since 1.0.0
+     */
     protected static $createdAt = 'task_created_at';
 
     /**
diff --git a/Models/TaskMapper.php b/Models/TaskMapper.php
index a85919c..81156c2 100644
--- a/Models/TaskMapper.php
+++ b/Models/TaskMapper.php
@@ -19,6 +19,17 @@ use phpOMS\DataStorage\Database\DataMapperAbstract;
 use phpOMS\DataStorage\Database\Query\Builder;
 use phpOMS\DataStorage\Database\Query\Column;
 
+/**
+ * Mapper class.
+ *
+ * @category   Tasks
+ * @package    Modules
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @license    OMS License 1.0
+ * @link       http://orange-management.com
+ * @since      1.0.0
+ */
 class TaskMapper extends DataMapperAbstract
 {
 
@@ -41,6 +52,12 @@ class TaskMapper extends DataMapperAbstract
         'task_created_at' => ['name' => 'task_created_at', 'type' => 'DateTime', 'internal' => 'createdAt'],
     ];
 
+    /**
+     * Has many relation.
+     *
+     * @var array<string, array>
+     * @since 1.0.0
+     */
     protected static $hasMany = [
         'taskElements' => [
             'mapper'         => '\Modules\Tasks\Models\TaskElementMapper',
@@ -51,6 +68,12 @@ class TaskMapper extends DataMapperAbstract
         ],
     ];
 
+    /**
+     * Has one relation.
+     *
+     * @var array<string, array>
+     * @since 1.0.0
+     */
     protected static $hasOne = [
         'schedule' => [
             'mapper'         => '\Modules\Calendar\Models\ScheduleMapper',
@@ -66,6 +89,12 @@ class TaskMapper extends DataMapperAbstract
      */
     protected static $table = 'task';
 
+    /**
+     * Created at.
+     *
+     * @var string
+     * @since 1.0.0
+     */
     protected static $createdAt = 'task_created_at';
 
     /**