@Override
    public State store() {
        if (complete) {
            return new State(new HashMap<>(paramMap), credentials);
        }
        return null;
    }
Constructs a new BasicScheme with UTF-8 as the charset.

@since 4.3
httpclient5/src/main/java/org/apache/hc/client5/http/impl/auth/BasicScheme.java