anchor.diff:  Response code:
   
   * Successful operation uses 200 OK
  -* Errors use a non-200 and (optionally) an error payload. See subsection on "Error Responses" for more details.
  +* Errors use a non-2xx and (optionally) an error payload. See subsection on "Error Responses" for more details.
   
   + Parameters
       + limit: 10 (optional, number) - Limit the number of entities to be retrieved
  
positive.code: 
  * Successful operation uses 200 OK. In addition, in the case of successful CREATE, a list of IDs is returned,
    each one corresponding to the ID of the element in the request payload and in the same order.
  * Errors use a non-200 and (optionally) an error payload. See subsection on "Error Responses" for more details.
  
  + Request (application/json)
  
  
negative.code: Response:
  
  * Successful operation uses 201 Created
  * Errors use a non-2xx and (optionally) an error payload. See subsection on "Error Responses" for more details.
  
  + Request (application/json)
  
  