@Override
    @NonNull
    public String getWaypointGpxId(@NonNull final String prefix, @NonNull final String geocode) {
        String gpxId = prefix;
        if (StringUtils.isNotBlank(geocode) && geocode.length() > 2) {
            gpxId += geocode.substring(2);
        }
        return gpxId;
    }
Remove a cache from the favorites list.
<br>
This must not be called from the UI thread.

@param cache the cache to add
@return {@code true} if the cache was successfully added, {@code false} otherwise
main/src/main/java/cgeo/geocaching/connector/gc/GCConnector.java