public void setScheduleExpression(String scheduleExpression) {
        this.scheduleExpression = scheduleExpression;
    }
<p>
The scheduling expression. For example, "cron(0 20 * * ? *)" or "rate(5 minutes)".
</p>

@param scheduleExpression
       The scheduling expression. For example, "cron(0 20 * * ? *)" or "rate(5 minutes)".
aws-java-sdk-events/src/main/java/com/amazonaws/services/cloudwatchevents/model/PutRuleRequest.java