public static AgentUpdateGrinderMessage getNullAgentUpdateGrinderMessage(String version) {
		return new AgentUpdateGrinderMessage(version, new byte[0], 0, -1, -1);
	}
Get Null AgentUpdateGrinderMessage when nothing can be read.

@param version version
@return AgentUpdateGrinderMessage null message
ngrinder-core/src/main/java/net/grinder/engine/communication/AgentUpdateGrinderMessage.java