code: def get_serializer_info(self, serializer):
          
          if hasattr(serializer, 'child'):
              # If this is a `ListSerializer` then we want to examine the
              # underlying child serializer instance instead.
              serializer = serializer.child
  
          # Remove the URL field if present
          serializer.fields.pop(api_settings.URL_FIELD_NAME, None)
  
          return OrderedDict([
              (field_name, self.get_field_info(field))
              for field_name, field in serializer.fields.items()
          ])
docs: Given an instance of a serializer, return a dictionary of metadata
          about its fields.