diff --git a/src/Form/ManageResolverRelationships.php b/src/Form/ManageResolverRelationships.php
index bb6bcfb2ef215122e808d831a69dd4af7d4473ca..993181bb874b2b048ff5353fb3ffe4a2c155684e 100644
--- a/src/Form/ManageResolverRelationships.php
+++ b/src/Form/ManageResolverRelationships.php
@@ -12,9 +12,14 @@ use Drupal\Core\Url;
 use Drupal\ctools\TypedDataResolver;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
+/**
+ * Provider manage resolver relationships.
+ */
 abstract class ManageResolverRelationships extends FormBase {
 
   /**
+   * The machine name.
+   *
    * @var string
    */
   protected $machine_name;
@@ -76,15 +81,17 @@ abstract class ManageResolverRelationships extends FormBase {
   public function buildForm(array $form, FormStateInterface $form_state) {
     $cached_values = $form_state->getTemporaryValue('wizard');
     $this->machine_name = $cached_values['id'];
-    $form['items'] = array(
+    $form['items'] = [
       '#type' => 'markup',
       '#prefix' => '<div id="configured-relationships">',
       '#suffix' => '</div>',
       '#theme' => 'table',
-      '#header' => array($this->t('Context ID'), $this->t('Label'), $this->t('Data Type'), $this->t('Options')),
+      '#header' => [
+        $this->t('Context ID'), $this->t('Label'), $this->t('Data Type'), $this->t('Options'),
+      ],
       '#rows' => $this->renderRows($cached_values),
-      '#empty' => $this->t('No relationships have been added.')
-    );
+      '#empty' => $this->t('No relationships have been added.'),
+    ];
 
     $form['relationships'] = [
       '#type' => 'select',
@@ -101,7 +108,7 @@ abstract class ManageResolverRelationships extends FormBase {
       ],
       '#submit' => [
         'callback' => [$this, 'submitForm'],
-      ]
+      ],
     ];
     return $form;
   }
@@ -117,6 +124,14 @@ abstract class ManageResolverRelationships extends FormBase {
     }
   }
 
+  /**
+   * Add relationship.
+   *
+   * @param array $form
+   *   The form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   Stores information about the state of a form.
+   */
   public function addRelationship(array &$form, FormStateInterface $form_state) {
     $relationship = $form_state->getValue('relationships');
     $content = $this->formBuilder->getForm($this->getContextClass(), $relationship, $this->getTempstoreId(), $this->machine_name);
@@ -132,10 +147,16 @@ abstract class ManageResolverRelationships extends FormBase {
     $url = Url::fromRoute($route_name, $route_parameters, $route_options);
     $content['submit']['#attached']['drupalSettings']['ajax'][$content['submit']['#id']]['url'] = $url->toString();
     $response = new AjaxResponse();
-    $response->addCommand(new OpenModalDialogCommand($this->t('Configure Relationship'), $content, array('width' => '700')));
+    $response->addCommand(new OpenModalDialogCommand($this->t('Configure Relationship'), $content, ['width' => '700']));
     return $response;
   }
 
+  /**
+   * Get the accesssible relationships.
+   *
+   * @param mixed $cached_values
+   *   The arbitrary value from temporary storage.
+   */
   protected function getAvailableRelationships($cached_values) {
     /** @var \Drupal\ctools\TypedDataResolver $resolver */
     $resolver = $this->typedDataResolver;
@@ -143,68 +164,80 @@ abstract class ManageResolverRelationships extends FormBase {
   }
 
   /**
-   * @param $cached_values
+   * Render the rows.
+   *
+   * @param mixed $cached_values
+   *   The arbitrary value from temporary storage.
    *
    * @return array
+   *   The array context.
    */
   protected function renderRows($cached_values) {
-    $contexts = array();
+    $contexts = [];
     foreach ($this->getContexts($cached_values) as $row => $context) {
       list($route_name, $route_parameters) = $this->getRelationshipOperationsRouteInfo($cached_values, $this->machine_name, $row);
-      $build = array(
+      $build = [
         '#type' => 'operations',
         '#links' => $this->getOperations($cached_values, $row, $route_name, $route_parameters),
-      );
-      $contexts[$row] = array(
+      ];
+      $contexts[$row] = [
         $row,
         $context->getContextDefinition()->getLabel(),
         $context->getContextDefinition()->getDataType(),
         'operations' => [
           'data' => $build,
         ],
-      );
+      ];
     }
     return $contexts;
   }
 
   /**
-   * @param array $cached_values
+   * Get the operations.
+   *
+   * @param mixed $cached_values
+   *   The arbitrary value from temporary storage.
    * @param string $row
+   *   The row.
    * @param string $route_name_base
+   *   The base of route.
    * @param array $route_parameters
+   *   The paramenters of route.
    *
    * @return mixed
+   *   The operations.
    */
-  protected function getOperations($cached_values, $row, $route_name_base, array $route_parameters = array()) {
-    // Base contexts will not be a : separated and generated relationships should have 3 parts.
+  protected function getOperations($cached_values, $row, $route_name_base, array $route_parameters = []) {
+    // Base contexts will not be a :
+    // separated and generated relationships should have 3 parts.
     if (count(explode(':', $row)) < 2) {
       return [];
     }
-    $operations['edit'] = array(
+    $operations['edit'] = [
       'title' => $this->t('Edit'),
       'url' => new Url($route_name_base . '.edit', $route_parameters),
       'weight' => 10,
-      'attributes' => array(
+      'attributes' => [
         'class' => ['use-ajax'],
         'data-dialog-type' => 'modal',
         'data-dialog-options' => Json::encode([
           'width' => 700,
         ]),
-      ),
-    );
+      ],
+    ];
     $route_parameters['id'] = $route_parameters['context'];
-    $operations['delete'] = array(
+    $operations['delete'] = [
       'title' => $this->t('Delete'),
       'url' => new Url($route_name_base . '.delete', $route_parameters),
       'weight' => 100,
-      'attributes' => array(
-        'class' => array('use-ajax'),
+      'attributes' => [
+        'class' => ['use-ajax'],
         'data-dialog-type' => 'modal',
         'data-dialog-options' => Json::encode([
           'width' => 700,
         ]),
-      ),
-    );
+      ],
+    ];
     return $operations;
   }
 
@@ -215,13 +248,18 @@ abstract class ManageResolverRelationships extends FormBase {
    * route information to control the modal/redirect needs of your use case.
    *
    * @return string
+   *   Return a subclass of '\Drupal\ctools\Form\ResolverRelationshipConfigure'.
    */
   abstract protected function getContextClass($cached_values);
 
   /**
    * The route to which relationship 'add' actions should submit.
    *
+   * @param mixed $cached_values
+   *   The arbitrary value from temporary storage.
+   *
    * @return string
+   *   The route of add action.
    */
   abstract protected function getAddRoute($cached_values);
 
@@ -229,22 +267,34 @@ abstract class ManageResolverRelationships extends FormBase {
    * Provide the tempstore id for your specified use case.
    *
    * @return string
+   *   The id of tempstore.
    */
   abstract protected function getTempstoreId();
 
   /**
-   * @param $cached_values
+   * Gets the context value.
+   *
+   * @param mixed $cached_values
+   *   The arbitrary value from temporary storage.
    *
    * @return \Drupal\Core\Plugin\Context\ContextInterface[]
+   *   Context data and definitions for plugins supporting
+   *    caching and return docs.
    */
   abstract protected function getContexts($cached_values);
 
   /**
-   * @param string $cached_values
+   * Get relationship operations of route info.
+   *
+   * @param mixed $cached_values
+   *   The arbitrary value from temporary storage.
    * @param string $machine_name
+   *   The machine name.
    * @param string $row
+   *   The row.
    *
    * @return array
+   *   The array of relationship operations.
    */
   abstract protected function getRelationshipOperationsRouteInfo($cached_values, $machine_name, $row);