anchor.diff:  + Response 204
   
   ### Remove a device [DELETE]
  +
   If specific device is not found, we work as deleted.
   + Request (application/json)
   
  
positive.code:             }
  
  ### Create a device [POST]
  From device model, mandatory fields are: device_id and protocol.
  
  + Request (application/json)
  
negative.code: 
  + Response 204
  
  ### Remove a service group [DELETE]
  
  You remove a subservice into a service. If Fiware-ServicePath is '/*' or '/#' remove a service group.
  
  + Parameters [apikey, resource, device]
  
  