public void setScheduleExpressionTimezone(String scheduleExpressionTimezone) {
        this.scheduleExpressionTimezone = scheduleExpressionTimezone;
    }
<p>
Optional. This is the timezone in which the schedule expression is set. By default, ScheduleExpressions are in
UTC. You can modify this to a specified timezone.
</p>

@param scheduleExpressionTimezone
       Optional. This is the timezone in which the schedule expression is set. By default, ScheduleExpressions
       are in UTC. You can modify this to a specified timezone.
aws-java-sdk-backup/src/main/java/com/amazonaws/services/backup/model/RestoreTestingPlanForUpdate.java