Method trimRight

java/lib/src/main/java/io/github/ccxt/base/Encode.java:85–89

(String s, char ch)

    }

    private static String trimRight(String s, char ch) {
        int i = s.length();
        while (i > 0 && s.charAt(i - 1) == ch) i--;
        return (i == s.length()) ? s : s.substring(0, i);
    }

    public static String urlencodeBase64(Object s) { return Base64urlEncode(s); }
    public static String Base64urlEncode(Object s) {