diff --git a/lib/Drupal/config_translation/ConfigGroupMapper.php b/lib/Drupal/config_translation/ConfigGroupMapper.php
index ae1126e..8ab5f3f 100644
--- a/lib/Drupal/config_translation/ConfigGroupMapper.php
+++ b/lib/Drupal/config_translation/ConfigGroupMapper.php
@@ -52,7 +52,7 @@ class ConfigGroupMapper implements ConfigMapperInterface {
   /**
    * Router name for this group in the routing system.
    *
-   * @var bool
+   * @var string
    */
   private $route_name;
 
@@ -82,14 +82,14 @@ class ConfigGroupMapper implements ConfigMapperInterface {
   }
 
   /**
-   * Implements \Drupal\config_translation\ConfigMapperInterface::hasEditTab().
+   * {@inheritdoc}
    */
   public function hasEditTab() {
     return $this->add_edit_tab;
   }
 
   /**
-   * Implements \Drupal\config_translation\ConfigMapperInterface::getBasePath().
+   * {@inheritdoc}
    */
   public function getBasePath() {
     return $this->base_path;
@@ -116,21 +116,21 @@ class ConfigGroupMapper implements ConfigMapperInterface {
   }
 
   /**
-   * Implements \Drupal\config_translation\ConfigMapperInterface::getMenuType().
+   * {@inheritdoc}
    */
   public function getMenuType() {
     return $this->menu_type;
   }
 
   /**
-   * Implements \Drupal\config_translation\ConfigMapperInterface::getPathIdIndex().
+   * {@inheritdoc}
    */
   public function getPathIdIndex() {
     return NULL;
   }
 
   /**
-   * Implements \Drupal\config_translation\ConfigMapperInterface::getConfigGroup().
+   * {@inheritdoc}
    */
   public function getConfigGroup($arg = NULL) {
     // This is already a config group.
@@ -140,9 +140,8 @@ class ConfigGroupMapper implements ConfigMapperInterface {
   /**
    * Returns the original language code of the configuration group.
    *
-   * @todo
-   *   Assumes the langcode of the first element for now. Might lead to
-   *   inconsistency. Revisit.
+   * @todo Revisit. This assumes the langcode of the first element for now and
+   *   might lead to inconsistency.
    */
   public function getLangcode() {
     return config_translation_original_langcode($this->names[0]);
@@ -197,7 +196,7 @@ class ConfigGroupMapper implements ConfigMapperInterface {
   }
 
   /**
-   * Checks that all pieces of this configuration group has translatables.
+   * Checks that all pieces of this configuration group have translatables.
    *
    * @return bool
    *   TRUE if all of the group elements have translatables, FALSE otherwise.
@@ -244,7 +243,7 @@ class ConfigGroupMapper implements ConfigMapperInterface {
    * {@inheritdoc}
    */
   public function setRouteName() {
-    $this->route_name = 'config_translation.item.' .   str_replace(array('/', '-'), array('.', '_'), $this->base_path);
+    $this->route_name = 'config_translation.item.' . str_replace(array('/', '-'), array('.', '_'), $this->base_path);
   }
 
   /**
@@ -260,4 +259,5 @@ class ConfigGroupMapper implements ConfigMapperInterface {
   public function getType() {
     return NULL;
   }
+
 }