public boolean sendMasterQuestion(Address toAddress) {
if (toAddress == null) {
throw new NullPointerException("No endpoint is specified!");
}
BuildInfo buildInfo = node.getBuildInfo();
JoinMessage joinMessage = new JoinMessage(Packet.VERSION, buildInfo.getBuildNumber(), thisAddress,
thisMember.getUuid(), node.createConfigCheck(), getSize());
return nodeEngine.getOperationService().send(new MasterDiscoveryOperation(joinMessage), toAddress);
}