code: function mockResponseBody (req, res, next) {
    if (res.swagger) {
      if (res.swagger.isEmpty) {
        // There is no response schema, so send an empty response
        util.debug("%s %s does not have a response schema. Sending an empty response", req.method, req.path);
        res.send();
      }
      else {
        // Serialize the response body according to the response schema
        let schema = new JsonSchema(res.swagger.schema);
        let serialized = schema.serialize(res.swagger.wrap(res.body));
  
        switch (res.swagger.schema.type) {
          case "object":
          case "array":
          case undefined:
            sendObject(req, res, next, serialized);
            break;
  
          case "file":
            sendFile(req, res, next, serialized);
            break;
  
          default:
            sendText(req, res, next, serialized);
        }
      }
    }
    else {
      next();
    }
  }
docs: Tries to make the response body adhere to the Swagger API.