public Collection<Application> getSourceLinkTargetAgentList() {
        Set<Application> agentList = new HashSet<>();
        Collection<LinkCallData> linkDataList = inLink.getLinkDataList();
        for (LinkCallData linkCallData : linkDataList) {
            agentList.add(linkCallData.getTarget());
        }
        return agentList;
    }
A class that describes a relationship between apps in application map

@author netspider
@author emeroad
@author HyunGil Jeong
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/link/Link.java