public void setStartTime(java.util.Date startTime) {
        this.startTime = startTime;
    }
<p>
The date and time in UTC for this action to start. For example, <code>"2019-06-01T00:00:00Z"</code>.
</p>

@param startTime
       The date and time in UTC for this action to start. For example, <code>"2019-06-01T00:00:00Z"</code>.
aws-java-sdk-autoscaling/src/main/java/com/amazonaws/services/autoscaling/model/ScheduledUpdateGroupAction.java