public java.util.List<String> getCalendarNames() {
        if (calendarNames == null) {
            calendarNames = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return calendarNames;
    }
<p>
The names or Amazon Resource Names (ARNs) of the Change Calendar type documents you want to gate your
associations under. The associations only run when that change calendar is open. For more information, see <a
href="https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-change-calendar">Amazon Web
Services Systems Manager Change Calendar</a>.
</p>

@return The names or Amazon Resource Names (ARNs) of the Change Calendar type documents you want to gate your
        associations under. The associations only run when that change calendar is open. For more information,
        see <a
        href="https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-change-calendar"
        >Amazon Web Services Systems Manager Change Calendar</a>.
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/model/CreateAssociationRequest.java