public V get(final long id) {
        try {
            if (contains(id, false)) {
                return valueOut;
            }
            return null;
        } finally {
            valueOut = null;
        }
    }
Get the value for the given id

@param id the key to query
@return the object, or null if id not known
main/src/main/java/cgeo/geocaching/brouter/util/CompactLongMap.java