Don't use it.

def post(self, resource_endpoint, data={}, files=None):
        """Don't use it."""
        url = self._create_request_url(resource_endpoint)
        if files:
            data = self._prepare_params_for_file_upload(data)
            return req.post(url, headers=self.auth_header, files=files, data=data)
        else:
            return req.post(url, headers=self.auth_header, json=data)