MongoCollection.updateImpl

UpdateResult updateImpl(T,  U,  O)(T[]  queries,  U[]  documents,  O[]  perUpdateOptions,  UpdateOptions options =  UpdateOptions.init,
		 bool  mustBeDocument =  false,  bool  mustBeModification =  false)

@safe

Implementation helper. It's possible to set custom per-update object options with this method, otherwise it's identical to replaceOne, updateOne and updateMany.