public static String encodeBase64ASCII(byte[] in) {
        byte[] bytes = encodeBase64(in);
        return new String(bytes, StandardCharsets.US_ASCII);
    }
@Test
    void encodeBase64ASCII() {
        String content = "😯";
        Assertions.assertArrayEquals(
                content.getBytes(StandardCharsets.UTF_8),
                StreamUtils.decodeASCIIByte(StreamUtils.encodeBase64ASCII(content.getBytes(StandardCharsets.UTF_8))));
    }