diff --git a/core/modules/migrate/src/Entity/Migration.php b/core/modules/migrate/src/Entity/Migration.php
index 54b90c3..5e0cb9b 100644
--- a/core/modules/migrate/src/Entity/Migration.php
+++ b/core/modules/migrate/src/Entity/Migration.php
@@ -478,15 +478,15 @@ public function setTrackLastImported($track_last_imported) {
    * {@inheritdoc}
    */
   public function getMigrationDependencies() {
-    return $this->migration_dependencies + array('required' => [], 'optional' => []);
+    return $this->migration_dependencies + ['required' => [], 'optional' => []];
   }
 
   /**
    * {@inheritdoc}
    */
   public function trustData() {
-    // Migrations cannot be trusted since they are often write by hand or as the
-    // result of a copy/paste.
+    // Migrations cannot be trusted since they are often written by hand and not
+    // through a UI.
     $this->trustedData = FALSE;
     return $this;
   }
diff --git a/core/modules/migrate/src/Plugin/MigrateDestinationInterface.php b/core/modules/migrate/src/Plugin/MigrateDestinationInterface.php
index 50f2a9b..1842b93 100644
--- a/core/modules/migrate/src/Plugin/MigrateDestinationInterface.php
+++ b/core/modules/migrate/src/Plugin/MigrateDestinationInterface.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\migrate\Plugin;
 
+use Drupal\Component\Plugin\DependentPluginInterface;
 use Drupal\Component\Plugin\PluginInspectionInterface;
 use Drupal\migrate\Entity\MigrationInterface;
 use Drupal\migrate\Row;
@@ -22,7 +23,7 @@
  *
  * @ingroup migration
  */
-interface MigrateDestinationInterface extends PluginInspectionInterface {
+interface MigrateDestinationInterface extends PluginInspectionInterface, DependentPluginInterface {
 
   /**
    * Get the destination ids.
diff --git a/core/modules/migrate/src/Plugin/MigrateSourceInterface.php b/core/modules/migrate/src/Plugin/MigrateSourceInterface.php
index 7154d27..0321ea9 100644
--- a/core/modules/migrate/src/Plugin/MigrateSourceInterface.php
+++ b/core/modules/migrate/src/Plugin/MigrateSourceInterface.php
@@ -6,6 +6,7 @@
  */
 
 namespace Drupal\migrate\Plugin;
+
 use Drupal\Component\Plugin\DependentPluginInterface;
 use Drupal\Component\Plugin\PluginInspectionInterface;
 use Drupal\migrate\Row;
@@ -20,7 +21,7 @@
  *
  * @ingroup migration
  */
-interface MigrateSourceInterface extends \Countable, \Iterator, PluginInspectionInterface {
+interface MigrateSourceInterface extends \Countable, \Iterator, PluginInspectionInterface, DependentPluginInterface {
 
   /**
    * Returns available fields on the source.
diff --git a/core/modules/migrate/src/Plugin/migrate/destination/Config.php b/core/modules/migrate/src/Plugin/migrate/destination/Config.php
index 99ba651..9af5531 100644
--- a/core/modules/migrate/src/Plugin/migrate/destination/Config.php
+++ b/core/modules/migrate/src/Plugin/migrate/destination/Config.php
@@ -108,7 +108,7 @@ public function getIds() {
    * {@inheritdoc}
    */
   public function calculateDependencies() {
-    list($provider,) = explode('.', $this->config->getName(), 2);
+    $provider = explode('.', $this->config->getName(), 2)[0];
     $this->addDependency('module', $provider);
     return $this->dependencies;
   }
diff --git a/core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php b/core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php
index c45cf18..192740b 100644
--- a/core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php
+++ b/core/modules/migrate/src/Plugin/migrate/destination/DestinationBase.php
@@ -8,7 +8,6 @@
 
 namespace Drupal\migrate\Plugin\migrate\destination;
 
-use Drupal\Component\Plugin\DependentPluginInterface;
 use Drupal\Core\Entity\DependencyTrait;
 use Drupal\Core\Plugin\PluginBase;
 use Drupal\migrate\Entity\MigrationInterface;
@@ -26,7 +25,7 @@
  *
  * @ingroup migration
  */
-abstract class DestinationBase extends PluginBase implements MigrateDestinationInterface, RequirementsInterface, DependentPluginInterface {
+abstract class DestinationBase extends PluginBase implements MigrateDestinationInterface, RequirementsInterface {
 
   use DependencyTrait;
 
diff --git a/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php b/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
index 62816af..8f85a77 100644
--- a/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
+++ b/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
@@ -7,7 +7,6 @@
 
 namespace Drupal\migrate\Plugin\migrate\source;
 
-use Drupal\Component\Plugin\DependentPluginInterface;
 use Drupal\Core\Entity\DependencyTrait;
 use Drupal\Core\Plugin\PluginBase;
 use Drupal\migrate\Entity\MigrationInterface;
@@ -26,7 +25,7 @@
  *
  * @ingroup migration
  */
-abstract class SourcePluginBase extends PluginBase implements MigrateSourceInterface, DependentPluginInterface {
+abstract class SourcePluginBase extends PluginBase implements MigrateSourceInterface {
 
   use DependencyTrait;