def METHOD_NAME(self):
    headers = {
        # TODO(jess): remove this whenever it's out of preview
        "Accept": "application/vnd.github.machine-man-preview+json",
    }
    headers.update(jwt.authorization_header(self.get_jwt()))
    return self.post(
        f"/app/installations/{self.integration.external_id}/access_tokens",
        headers=headers,
    )