code: def serialize(self, data):
          
  
          super(Serializer, self).serialize(data)
  
          body = {
              'jsonapi': {
                  'version': goldman.config.JSONAPI_VERSION,
              },
              'links': {
                  'self': self.req.path,
              },
              'meta': {
                  'included_count': 0,
                  'primary_count': 0,
                  'total_primary': self.req.pages.total,
              },
          }
  
          included = data['included']
          if included:
              body['included'] = self._serialize_datas(included)
              body['meta']['included_count'] = len(included)
  
          _data = data['data']
          if isinstance(_data, list):
              body.update({'data': self._serialize_datas(_data)})
              body.update({'links': self._serialize_pages()})
              body['meta']['primary_count'] = len(_data)
          elif _data:
              body.update({'data': self._serialize_data(_data)})
              body['meta']['primary_count'] = 1
          else:
              body.update({'data': None})
  
          self.resp.body = json.dumps(body)
docs: Determine & invoke the proper serializer method
  
          If data is a list then the serialize_datas method will
          be run otherwise serialize_data.