code: public static Executor monitor(MeterRegistry registry, Executor executor, String executorName, Tag... tags) {
          return monitor(registry, executor, executorName, asList(tags));
      }
docs: Record metrics on the use of an {@link Executor}.
  
  @param registry     The registry to bind metrics to.
  @param executor     The executor to instrument.
  @param executorName Will be used to tag metrics with "name".
  @param tags         Tags to apply to all recorded metrics.
  @return The instrumented executor, proxied.