public static RequestContextCurrentTraceContextBuilder builder() {
        return new RequestContextCurrentTraceContextBuilder();
    }
Use this when you need customizations such as log integration via
{@linkplain RequestContextCurrentTraceContextBuilder#addScopeDecorator(ScopeDecorator)}.

@see Tracing.Builder#currentTraceContext(CurrentTraceContext)
brave/brave6/src/main/java/com/linecorp/armeria/common/brave/RequestContextCurrentTraceContext.java