code: public void incrementInvocationCounterAndTotalDurationWithNanos(long deltaInNanos) {
  
          totalDurationInNanosCounter.addAndGet(deltaInNanos);
  
          invocationCounter.incrementAndGet();
  
          if (deltaInNanos >= this.verySlowInvocationThresholdInNanos) {
              this.verySlowInvocationCounter.incrementAndGet();
          } else if (deltaInNanos >= this.slowInvocationThresholdInNanos) {
              this.slowInvocationCounter.incrementAndGet();
          }
      }
docs: Increment {@link #totalDurationInNanosCounter},
  {@link #invocationCounter} and, if eligible,
  {@link #verySlowInvocationCounter} or {@link #slowInvocationCounter}.
  
  @param deltaInNanos
  delta in nanos