@Deprecated
    public AbstractClientOptionsBuilder auth(OAuth2Token token) {
        return auth((AuthToken) token);
    }
Sets the <a href="https://www.oauth.com/">OAuth 2.0</a> header using
{@link HttpHeaderNames#AUTHORIZATION}.

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