code: public OverviewStats valuate(CucumberScenarioResult scenario) {
          this.reset();
          scenario.valuate();
          this.addOverallDuration((float) scenario.getDuration());
          this.addStepsPassed(scenario.getPassed());
          this.addStepsFailed(scenario.getFailed());
          this.addStepsKnown(scenario.getKnown());
          this.addStepsUndefined(scenario.getUndefined() + scenario.getSkipped());
          return this;
      }
docs: Calculates overall statistics for specific scenario.
  @param scenario the scenario result to calculate statistics for.
  @return calculated statistics for specific scenario.