MAGETWO-59444: Create serializer interface and json class in framework

lib/internal/Magento/Framework/Serialize/Serializer/Json.php

@@ -9,7 +9,6 @@ use Magento\Framework\Serialize\SerializerInterface;
 
 /**
  * Class for serializing data to json string and unserializing json string to data
- *
  */
 class Json implements SerializerInterface
 {