PlayFramework in Scala, Reading - Error in case of unknown key?

I have a custom one Reads

for my object:

implicit val myReads: Reads[MyObject] = (
    (__ \ "id").readNullable[UUID] and
    (__ \ "name").readNullable[String]
)(MyObject.apply _)

      

        
        
        
      

    

Can I crash if an unknown key is provided? For example, I would like it to fail when trying to parse a Json like this,

{ "key" : 1234 }

      

        
        
        
      

    

so that request.body.validate[MyObject]

will result in a JsError

. Thank!