Number of documents deleted.
Number of documents inserted.
Inserted document generated Id's, hash key is the index of the originating operation.
Number of documents matched for update.
Number of documents modified.
The command result object.
Number of documents upserted.
Upserted document generated Id's, hash key is the index of the originating operation.
Generated using TypeDoc
BulkWriteOpResultObject.
http://mongodb.github.io/node-mongodb-native/2.1/api/Collection.html#~BulkWriteOpResult