diff --git a/core/modules/migrate/src/Plugin/migrate/process/FormatDate.php b/core/modules/migrate/src/Plugin/migrate/process/FormatDate.php
index 95f0bb4..4ebdef3 100644
--- a/core/modules/migrate/src/Plugin/migrate/process/FormatDate.php
+++ b/core/modules/migrate/src/Plugin/migrate/process/FormatDate.php
@@ -9,12 +9,19 @@
 use Drupal\migrate\Row;
 
 /**
- * This plugin returns date storage formats from \DateTime::createFromFormat.
+ * This plugin applies date storage formats from \DateTime::createFromFormat.
  *
  * @MigrateProcessPlugin(
  *   id = "format_date"
  * )
  *
+ * Available configuration keys
+ *   - from_format: the source format string as accepted by date()
+ *       http://php.net/manual/en/function.date.php
+ *   - to_format: the format string as accepted by date() to apply on source.
+ *   - timezone: @see Drupal\Component\Datetime\DateTimePlus::__construct()
+ *   - settings: @see Drupal\Component\Datetime\DateTimePlus::__construct()
+  *
  * Example usage for date only fields (DATETIME_DATE_STORAGE_FORMAT):
  * @code
  * process:
@@ -66,7 +73,8 @@ public function transform($value, MigrateExecutableInterface $migrate_executable
     //   https://www.drupal.org/node/2830079
     try {
       $transformed = DateTimePlus::createFromFormat($fromFormat, $value, $timezone, $settings)->format($toFormat);
-    } catch (\Exception $e) {
+    }
+    catch (\Exception $e) {
       throw new MigrateException(sprintf('Format date plugin could not transform "%s" using the format "%s".', $value, $fromFormat));
     }