我在使用C#MongoDBCountDocumentAsync函数时遇到了奇怪的事情。我在MongoDB上启用了查询日志记录，这就是我得到的:{"op":"command","ns":"somenamespace","command":{"aggregate":"reservations","pipeline":[{"some_query_key":"query_value"},{"$group":{"_id":null,"n":{"$sum":1}}}],"cursor":{}},"keyUpdates":0,"writeConflicts":0,"numYield":9,"lock