@Deprecated
    public AbstractClientOptionsBuilder auth(BasicToken token) {
        return auth((AuthToken) token);
    }
Sets the
<a href="https://en.wikipedia.org/wiki/Basic_access_authentication">HTTP basic access authentication</a>
header using {@link HttpHeaderNames#AUTHORIZATION}.

@deprecated Use {@link #auth(AuthToken)} instead.
core/src/main/java/com/linecorp/armeria/client/AbstractClientOptionsBuilder.java