diff --git a/Models/CauseMapper.php b/Models/CauseMapper.php
index 18cba66..046fc12 100644
--- a/Models/CauseMapper.php
+++ b/Models/CauseMapper.php
@@ -35,6 +35,12 @@ final class CauseMapper extends DataMapperAbstract
         'riskmngmt_cause_probability'    => ['name' => 'riskmngmt_cause_probability', 'type' => 'int', 'internal' => 'probability'],
     ];
 
+    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
+     */
     protected static $belongsTo = [
         'risk'       => [
             'mapper' => RiskMapper::class,
diff --git a/Models/DepartmentMapper.php b/Models/DepartmentMapper.php
index 912df15..9b09a0c 100644
--- a/Models/DepartmentMapper.php
+++ b/Models/DepartmentMapper.php
@@ -52,6 +52,11 @@ final class DepartmentMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, string>>
      * @since 1.0.0
+     */    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
      */
     protected static $belongsTo = [
         'department' => [
diff --git a/Models/ProcessMapper.php b/Models/ProcessMapper.php
index 68e9477..375bb86 100644
--- a/Models/ProcessMapper.php
+++ b/Models/ProcessMapper.php
@@ -36,6 +36,12 @@ final class ProcessMapper extends DataMapperAbstract
         'riskmngmt_process_deputy'         => ['name' => 'riskmngmt_process_deputy', 'type' => 'int', 'internal' => 'deputy'],
     ];
 
+    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
+     */
     protected static $belongsTo = [
         'unit'       => [
             'mapper' => UnitMapper::class,
diff --git a/Models/ProjectMapper.php b/Models/ProjectMapper.php
index 4888dc7..f34e65d 100644
--- a/Models/ProjectMapper.php
+++ b/Models/ProjectMapper.php
@@ -52,6 +52,11 @@ final class ProjectMapper extends DataMapperAbstract
      *
      * @var array<string, array<string, string>>
      * @since 1.0.0
+     */    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
      */
     protected static $belongsTo = [
         'project' => [
diff --git a/Models/RiskMapper.php b/Models/RiskMapper.php
index 782c488..e0fa889 100644
--- a/Models/RiskMapper.php
+++ b/Models/RiskMapper.php
@@ -46,6 +46,11 @@ final class RiskMapper 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'       => [
@@ -74,6 +79,12 @@ final class RiskMapper extends DataMapperAbstract
         ],
     ];
 
+    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
+     */
     protected static $belongsTo = [
         'project'    => [
             'mapper' => ProjectMapper::class,
diff --git a/Models/RiskObjectMapper.php b/Models/RiskObjectMapper.php
index c046159..4ff590a 100644
--- a/Models/RiskObjectMapper.php
+++ b/Models/RiskObjectMapper.php
@@ -32,6 +32,12 @@ final class RiskObjectMapper extends DataMapperAbstract
         'riskmngmt_risk_object_risk'           => ['name' => 'riskmngmt_risk_object_risk', 'type' => 'int', 'internal' => 'risk'],
     ];
 
+    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
+     */
     protected static $belongsTo = [
         'unit' => [
             'mapper' => RiskMapper::class,
diff --git a/Models/SolutionMapper.php b/Models/SolutionMapper.php
index 5a42d83..27ea1fe 100644
--- a/Models/SolutionMapper.php
+++ b/Models/SolutionMapper.php
@@ -34,6 +34,12 @@ final class SolutionMapper extends DataMapperAbstract
         'riskmngmt_solution_risk'           => ['name' => 'riskmngmt_solution_risk', 'type' => 'int', 'internal' => 'risk'],
     ];
 
+    /**
+     * Belongs to.
+     *
+     * @var array<string, array<string, string>>
+     * @since 1.0.0
+     */
     protected static $belongsTo = [
         'risk'  => [
             'mapper' => RiskMapper::class,