public static byte[] getValue(byte[] raw) {
        try (final Asn1InputStream is = new Asn1InputStream(raw)) {
            is.readTag();
            return is.read(is.readLength());
        }
    }
@Test
    public void getValueShouldSkipTagAndLength() {
        assertArrayEquals(new byte[] { 0x31 }, Asn1Utils.getValue(new byte[] { 0x10, 1, 0x31}));
    }