public void addAgentInfo(Set<AgentAndStatus> agentInfo) {
        if (agentInfo == null) {
            return;
        }
        this.agentSet.addAll(agentInfo);
    }
@author emeroad
@author minwoo.jung
@author HyunGil Jeong
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/nodes/ServerBuilder.java