MongoClientSettings.getAuthDatabase
string getAuthDatabase() @safe @nogc nothrow pure const returnResolves the database to run authentication commands on. (authSource if set, otherwise the URI's database if set, otherwise "admin")
string getAuthDatabase() @safe @nogc nothrow pure const returnResolves the database to run authentication commands on. (authSource if set, otherwise the URI's database if set, otherwise "admin")