final ReplyHandler handler = new ReplyHandler();
handler.setCommandHandler("isMaster", new IsMaster());
handler.setCommandHandler("listDatabases", new ListDatabases());
handler.setCommandHandler("count", new Count(MockMongo.this));
handler.setCommandHandler("findandmodify", new FindAndModify(
MockMongo.this));
handler.setCommandHandler("dbstats", new DbStats(
MockMongo.this.data));
handler
.setQueryHandler(new DefaultQueryHandler(MockMongo.this));