private boolean accept(LinkData linkData) {
        final Application toApplication = linkData.getToApplication();
        boolean isDestinationTerminal = toApplication.getServiceType().isTerminal();
        boolean isDestinationUnknown = toApplication.getServiceType().isUnknown();
        if (isDestinationTerminal || isDestinationUnknown) {
            logger.debug("Filtering linkData : {}", linkData);
            return false;
        }
        return true;
    }
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