public KeyGroupSummary withKeyGroup(KeyGroup keyGroup) {
        setKeyGroup(keyGroup);
        return this;
    }
<p>
A key group.
</p>

@param keyGroup
       A key group.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cloudfront/src/main/java/com/amazonaws/services/cloudfront/model/KeyGroupSummary.java