{ "acknowledged": true, "insertedCount": 2, "insertedIds": { "0": <ObjectID>, "1": <ObjectID> }, "matchedCount": 3, "modifiedCount": 3, "deletedCount": 2, "upsertedCount": 1, "upsertedIds": [ <ObjectID> ] }
[ { "_id": <ObjectID>, "v": "after update" }, { "_id": <ObjectID>, "v": "after update many" }, { "_id": <ObjectID>, "v": "after update many" }, { "_id": <ObjectID>, "a": 1 }, { "_id": <ObjectID>, "a": 1 }, { "_id": <ObjectID>, "v2": "after replace" } ]