docs: @Bean(preDestroy = "close")
      @Singleton
      @Requires(classes = Tracing.class)
      Tracing braveTracing(@Nullable Reporter<Span> reporter) {
          Tracing.Builder builder = braveTracerConfiguration.getTracingBuilder();
          if (reporter != null) {
              builder.spanReporter(reporter);
          } else {
              builder.spanReporter(Reporter.NOOP);
          }
          return builder.build();
      }