def METHOD_NAME(self, token, url, extra_params=None):
    extra_params = extra_params or {}
    scope = GOOGLE_OAUTH_SCOPE + \
            getattr(settings, 'GOOGLE_OAUTH_EXTRA_SCOPE', [])
    extra_params.update({
        'scope': ' '.join(scope),
        'xoauth_displayname': getattr(settings, 'GOOGLE_DISPLAY_NAME',
                                      'Social Auth')
    })
    return super(GoogleOAuth, self).METHOD_NAME(token, url, extra_params)