public CloudWatchAlarmTemplateGroupSummary withModifiedAt(java.util.Date modifiedAt) {
        setModifiedAt(modifiedAt);
        return this;
    }
@param modifiedAt
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-medialive/src/main/java/com/amazonaws/services/medialive/model/CloudWatchAlarmTemplateGroupSummary.java