@Override
    public LinkDataMap processLinkDataMap(LinkDirection linkDirection, LinkDataMap linkDataMap, TimeWindow timeWindow) {
        final LinkDataMap filteredLinkDataMap = new LinkDataMap();
        for (LinkData linkData : linkDataMap.getLinkDataList()) {
            if (accept(linkData)) {
                filteredLinkDataMap.addLinkData(linkData);
            }
        }
        return filteredLinkDataMap;
    }
Filters out link data pointing to terminal and unknown nodes.

@author HyunGil Jeong
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/map/processor/WasOnlyProcessor.java