Method mod

java/lib/src/main/java/io/github/ccxt/Helpers.java:351–359

(Object a, Object b)

    }

    public static Object mod(Object a, Object b) {
        if (a == null || b == null) return null;
        a = normalizeIntIfNeeded(a);
        b = normalizeIntIfNeeded(b);
        if (a instanceof String || a instanceof Long || a instanceof Integer || a instanceof Double) {
            return toDouble(a) % toDouble(b);
        }
        return null;
    }

    public static Object add(Object a, Object b) {
        a = normalizeIntIfNeeded(a);