public void setActivities(java.util.Collection<Activity> activities) {
        if (activities == null) {
            this.activities = null;
            return;
        }

        this.activities = new com.amazonaws.internal.SdkInternalList<Activity>(activities);
    }
<p>
The scaling activities. Activities are sorted by start time. Activities still in progress are described first.
</p>

@param activities
       The scaling activities. Activities are sorted by start time. Activities still in progress are described
       first.
aws-java-sdk-autoscaling/src/main/java/com/amazonaws/services/autoscaling/model/DescribeScalingActivitiesResult.java