diff --git a/postal_code.module b/postal_code.module
index 3e6e88f..a938dac 100644
--- a/postal_code.module
+++ b/postal_code.module
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Postal Code field type module file
+ * Postal Code field type module file.
  *
  * This module allows site administrators to add a postal code field type
  * with basic validation for US and Canadian
@@ -18,7 +18,6 @@
  * -for-12-countries/"
  */
 
-
 use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\Core\Locale\CountryManager;
 use Drupal\Component\Utility\Unicode;
@@ -38,7 +37,7 @@ function postal_code_help($route_name, RouteMatchInterface $route_match) {
     }
     $configurl = Url::fromRoute('postal_code.admin')->toString();
     $conturl   = Url::fromRoute('entity.node_type.collection')->toString();
-    $helptext = <<<EOT
+    $helptext  = <<<EOT
 <p>A very minimal D7 Postal Code field with validation for one country (listed below) or a combination of countries.</p>
 
 <p>Countries with validation:
@@ -51,6 +50,6 @@ function postal_code_help($route_name, RouteMatchInterface $route_match) {
 <p>Thanks to <a href="http://www.pixelenvision.com/1708/zip-postal-code-validation-regex-php-code-for-12-countries/">Pixel Envision</a> and <a href="http://geekswithblogs.net/MainaD/archive/2007/12/03/117321.aspx">Geeks With Blogs</a> for the list of countries and <a href="http://www.knowclassic.com">Classic Graphics</a> for the time to complete it.</p>
 EOT;
 
-    return t($helptext);
+    return $helptext;
   }
 }
diff --git a/src/Form/PostalCodeSettingsForm.php b/src/Form/PostalCodeSettingsForm.php
index 879badc..64c4950 100644
--- a/src/Form/PostalCodeSettingsForm.php
+++ b/src/Form/PostalCodeSettingsForm.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\postal_code\Form;
 
-
 use Drupal\Core\Form\ConfigFormBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Component\Utility\Unicode;
@@ -10,7 +9,6 @@ use Drupal\Core\Locale\CountryManagerInterface;
 use Drupal\postal_code\PostalCodeValidationInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
-
 /**
  * Postal code admin settings form.
  */
@@ -42,7 +40,6 @@ class PostalCodeSettingsForm extends ConfigFormBase {
    *
    * @param \Drupal\Core\Locale\CountryManagerInterface $country_manager
    *    The CountryManager service.
-   *
    * @param \Drupal\postal_code\PostalCodeValidationInterface $postal_code_validation
    *    The PostalCodeValidation service.
    */
@@ -121,4 +118,5 @@ class PostalCodeSettingsForm extends ConfigFormBase {
 
     parent::submitForm($form, $form_state);
   }
+
 }
diff --git a/src/Plugin/Field/FieldFormatter/PostalCodeFormatter.php b/src/Plugin/Field/FieldFormatter/PostalCodeFormatter.php
index 4972ff8..f52e2d0 100644
--- a/src/Plugin/Field/FieldFormatter/PostalCodeFormatter.php
+++ b/src/Plugin/Field/FieldFormatter/PostalCodeFormatter.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\postal_code\Plugin\Field\FieldFormatter;
 
-
 use Drupal\Core\Field\FormatterBase;
 use Drupal\Core\Field\FieldItemListInterface;
 
@@ -34,4 +33,5 @@ class PostalCodeFormatter extends FormatterBase {
 
     return $element;
   }
+
 }
diff --git a/src/Plugin/Field/FieldType/PostalCodeItem.php b/src/Plugin/Field/FieldType/PostalCodeItem.php
index e959e98..8064797 100644
--- a/src/Plugin/Field/FieldType/PostalCodeItem.php
+++ b/src/Plugin/Field/FieldType/PostalCodeItem.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\postal_code\Plugin\Field\FieldType;
 
-
 use Drupal\Core\Field\FieldItemBase;
 use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\Core\TypedData\DataDefinition;
@@ -47,8 +46,8 @@ class PostalCodeItem extends FieldItemBase {
    */
   public static function defaultFieldSettings() {
     $settings = array(
-        'country_select' => 'any',
-      ) + parent::defaultFieldSettings();
+      'country_select' => 'any',
+    ) + parent::defaultFieldSettings();
 
     return $settings;
   }
@@ -108,4 +107,5 @@ class PostalCodeItem extends FieldItemBase {
       ),
     );
   }
+
 }
diff --git a/src/Plugin/Field/FieldWidget/PostalCodeWidget.php b/src/Plugin/Field/FieldWidget/PostalCodeWidget.php
index 3338b34..c409bb4 100644
--- a/src/Plugin/Field/FieldWidget/PostalCodeWidget.php
+++ b/src/Plugin/Field/FieldWidget/PostalCodeWidget.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\postal_code\Plugin\Field\FieldWidget;
 
-
 use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Field\FieldDefinitionInterface;
 use Drupal\Core\Field\FieldItemListInterface;
@@ -123,4 +122,5 @@ class PostalCodeWidget extends WidgetBase implements ContainerFactoryPluginInter
       }
     }
   }
+
 }
diff --git a/src/PostalCodeValidation.php b/src/PostalCodeValidation.php
index 7e1ee10..e3baae4 100644
--- a/src/PostalCodeValidation.php
+++ b/src/PostalCodeValidation.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\postal_code;
 
-
 /**
  * Provide additional methods for validations of postal code field.
  */
@@ -10,6 +9,8 @@ class PostalCodeValidation implements PostalCodeValidationInterface {
 
   /**
    * An array of country code => validation pattern.
+   *
+   * @var array
    */
   protected $countries;
 
diff --git a/src/PostalCodeValidationInterface.php b/src/PostalCodeValidationInterface.php
index 3129ab6..90e0204 100644
--- a/src/PostalCodeValidationInterface.php
+++ b/src/PostalCodeValidationInterface.php
@@ -2,17 +2,19 @@
 
 namespace Drupal\postal_code;
 
-
 /**
  * Interface ValidatorServiceInterface.
- * Provide interface with additional methods for validations of postal code field.
+ *
+ * Provide interface with additional methods
+ * for validations of postal code field.
  */
 interface PostalCodeValidationInterface {
 
   /**
    * Actual validation function.
    *
-   * @return array of RegExp patterns for validation.
+   * @return array
+   *   Array of RegExp patterns for validation.
    */
   public function getValidationPatterns();