public AutoScalingGroupRecommendation withLookBackPeriodInDays(Double lookBackPeriodInDays) {
        setLookBackPeriodInDays(lookBackPeriodInDays);
        return this;
    }
<p>
The number of days for which utilization metrics were analyzed for the Auto Scaling group.
</p>

@param lookBackPeriodInDays
       The number of days for which utilization metrics were analyzed for the Auto Scaling group.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-computeoptimizer/src/main/java/com/amazonaws/services/computeoptimizer/model/AutoScalingGroupRecommendation.java