@Deprecated
    public static long gcLikeCodeToGcLikeId(final String code) {
        if (code == null || code.length() < 2) {
            return 0;
        }
        return codeToId(code.substring(0, 2), code, true);
    }
Takes given code, removes first two chars and converts remainder to a gc-like number.
GC-invalid chars (like O or I) are treated with value -1
Method will return same value as {@link #gcCodeToGcId(String)} for legal GC Codes and "something" for invalid ones
Function is needed in legacy code e.g. to sort GPX parser codes. You should probably not use it for new code...
main/src/main/java/cgeo/geocaching/connector/gc/GCUtils.java