docs: def _pure_data(self, data: Any) -> Any:
          """
          If data is dict-like object, convert it to pure dict instance, so it
          will be possible to pass to default ``jsonschema.validate`` func.
  
          :param data: Request or response data.
          """
          if not isinstance(data, dict) and not isinstance(data, list):
              try:
                  return dict(data)
              except TypeError:
                  ...
          return data