goja-core/src/main/java/goja/core/kits/lang/CharKit.java
public static byte[] toAsciiByteArray(CharSequence charSequence) {
        byte[] barr = new byte[charSequence.length()];
        for (int i = 0; i < barr.length; i++) {
            char c = charSequence.charAt(i);
            barr[i] = (byte) ((int) (c <= 0xFF ? c : 0x3F));
        }
        return barr;
    }
public static byte[] toAsciiByteArray(CharSequence charSequence) {
        byte[] barr = new byte[charSequence.length()];
        for (int i = 0; i < barr.length; i++) {
            char c = charSequence.charAt(i);
            barr[i] = (byte) ((int) (c <= 0xFF ? c : 0x3F));
        }
        return barr;
    }
Converts char sequence into ASCII byte array.