anchor.diff:                  }
               }
   
  -+ Request XML User
  ++ Request XML
       + Headers
   
               Accept: text/xml
  
positive.code: 
  + Request without If-Match header
      + Headers
      
              If-Match: <unset>
  
  + Response 403 (application/json)
  
negative.code: ## Media Types
  This API uses the json media-type to represent resources states and affordances.
  
  Requests with a message-body are using plain JSON to set or update resource
  states.
  
  
  ## Error States
  