public static String toNamespace(String name) {
        StringBuilder result = new StringBuilder();
        int pos = 0;
        while (pos < name.length()) {
            while (pos < name.length() && !isCppIdentifierCharacterStart(name.charAt(pos))) {
                pos++;
            }
            if (pos == name.length()) {
                break;
            }
            if (result.length() != 0) {