def upcoming(cls, api_key=None, stripe_account=None, **params):
        """Return a deferred."""
        url = cls.class_url() + '/upcoming'
        return cls.request('get', url, params)
def upcoming ( cls , api_key = None , stripe_account = None , ** params ) : url = cls . class_url ( ) + '/upcoming' return cls . request ( 'get' , url , params )
Return a deferred.