public WeeklySetting withDayOfWeek(String dayOfWeek) {
        setDayOfWeek(dayOfWeek);
        return this;
    }
<p>
The day of the week when weekly recurring on-call shift rotations begins.
</p>

@param dayOfWeek
       The day of the week when weekly recurring on-call shift rotations begins.
@return Returns a reference to this object so that method calls can be chained together.
@see DayOfWeek
aws-java-sdk-ssmcontacts/src/main/java/com/amazonaws/services/ssmcontacts/model/WeeklySetting.java