docs: def revoke_access_token(self):
          """
          Revoke the access token currently in use.
          """
  
          if not self._access_token:
              return
  
          self.execute_post('authentication/revoke', json=dict(
              token_type_hint='access_token',
              token=self._access_token
          ))
  
          self._access_token = None