docs: @Subscribe
      public void updateThrottleState(ThrottleState throttleState) {
          // Only run if throttling is enabled.
          if (!throttlingAllowed) {
              return;
          }
          // check if we are throttled
          final boolean throttled = determineIfThrottled(throttleState);
          if (currentlyThrottled.get()) {
              // no need to unblock
              if (throttled) {
                  return;
              }
              // sanity check
              if (blockLatch == null) {
                  log.error("Expected to see a transport throttle latch, but it is missing. This is a bug, continuing anyway.");
                  return;
              }
              currentlyThrottled.set(false);
              handleChangedThrottledState(false);
              blockLatch.countDown();
          } else if (throttled) {
              currentlyThrottled.set(true);
              handleChangedThrottledState(true);
              blockLatch = new CountDownLatch(1);
          }
      }