public void addLinkList(LinkList linkList) {
            Objects.requireNonNull(linkList, "linkList");

            for (Link link : linkList.getLinkList()) {
                addLink(link);
            }
        }
find all out links of fromApplication
@param fromApplication
@return
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/link/LinkList.java