Deserializer for this command's result.
Makes the BSONDocument
for documents that will be send as body of this command's query.
Produces a reactivemongo.core.commands.MakableCommand instance of this command.
Produces a reactivemongo.core.commands.MakableCommand instance of this command.
name of the target database.
States if this command can be run on secondaries.
A MongoDB Command.
Basically, it's as query that is performed on any db.$cmd collection and gives back one document as a result.