public AutoScalingGroup withDefaultInstanceWarmup(Integer defaultInstanceWarmup) {
        setDefaultInstanceWarmup(defaultInstanceWarmup);
        return this;
    }
<p>
The duration of the default instance warmup, in seconds.
</p>

@param defaultInstanceWarmup
       The duration of the default instance warmup, in seconds.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-autoscaling/src/main/java/com/amazonaws/services/autoscaling/model/AutoScalingGroup.java