Method opNeg

java/lib/src/main/java/io/github/ccxt/Helpers.java:1051–1077

(Object value)

    }

    public static Object opNeg(Object value) {
        if (value == null) {
            return null;
        }

        if (value instanceof Byte) {
            byte v = (Byte) value;
            return (byte) -v;
        }
        if (value instanceof Short v) {
            return (short) -v;
        }
        if (value instanceof Integer v) {
            return -v;
        }
        if (value instanceof Long v) {
            return -v;
        }
        if (value instanceof Float v) {
            return -v;
        }
        if (value instanceof Double v) {
            return -v;
        }

        return null;
    }

    public static void throwDynamicException(Object exception, Object message) {
        if (exception == null) {