@Internal
    public String getNonce() {
        return lastNonce;
    }
@deprecated This constructor is deprecated to enforce the use of {@link StandardCharsets#UTF_8} encoding
in compliance with RFC 7616 for HTTP Digest Access Authentication. Use the default constructor {@link #DigestScheme()} instead.

@param charset the {@link Charset} set to be used for encoding credentials. This parameter is ignored as UTF-8 is always used.
httpclient5/src/main/java/org/apache/hc/client5/http/impl/auth/DigestScheme.java