public static String getLogImageId(final String imageGuid, final String imageId) {
        return (imageGuid == null ? "" : imageGuid) + "::" + (imageId == null ? "" : imageId);
    }
Provides methods to handle all aspects of creating, editing and deleting Log entries for GC.com (both caches and trackables)
main/src/main/java/cgeo/geocaching/connector/gc/GCLogAPI.java