'Revoke an access or refresh token.
:param token: The token string.
:param token_type_hint: access_token or refresh_token.
:param request: The HTTP Request (oauthlib.common.Request)
Method is used by:
- Revocation Endpoint'

def revoke_token(self, token, token_type_hint, request, *args, **kwargs):

    raise NotImplementedError(u'Subclasses    must    implement    this    method.')
