API improvements (#1826)

src/Entity/CustomerMeta.php

@@ -12,6 +12,7 @@ declare(strict_types=1);
 namespace App\Entity;
 
 use Doctrine\ORM\Mapping as ORM;
+use JMS\Serializer\Annotation as Serializer;
 use Symfony\Component\Validator\Constraints as Assert;
 
 /**
@@ -21,6 +22,7 @@ use Symfony\Component\Validator\Constraints as Assert;
  *          @ORM\UniqueConstraint(columns={"customer_id", "name"})
  *      }
  * )
+ * @Serializer\ExclusionPolicy("all")
  */
 class CustomerMeta implements MetaTableTypeInterface
 {