class DocumentReference extends EntityReference {

    public WikiReference getWikiReference()
    {
        return (WikiReference) extractReference(EntityType.WIKI);
    }

    public  DocumentReference(EntityReference reference);
    public  DocumentReference(String wikiName, String spaceName, String pageName);
    public  DocumentReference(String wikiName, List<String> spaceNames, String pageName);
    public  DocumentReference(String pageName, SpaceReference parent);

}