def get_subscription(document_class, sub_id, topic=None):
 topic = _get_document_topic(document_class, topic)
 return prospective_search.get_subscription(datastore.Entity, sub_id, topic=topic)

def get_subscription ( document_class , sub_id , topic = None ) : topic = _get_document_topic ( document_class , topic ) return prospective_search . get_subscription ( datastore . Entity , sub_id , topic = topic )
get subscription information .