code: public void update(String counter, long executionDuration, boolean success)
      {
          this.get(counter).update(executionDuration, success);
      }
docs: Tracks a generic call execution by reporting the execution duration.  This method should be used for successful calls only.
  
  @param counter the name of the counter to update.
  @param executionDuration the duration of the execution call to track in this counter.
  @param success the flag indicating whether the execution call was successful.