code: public void ensureUniqueName(CmsClientSitemapEntry parent, String newName, I_CmsSimpleCallback<String> callback) {
  
          ensureUniqueName(parent.getSitePath(), newName, callback);
      }
docs: Ensure the uniqueness of a given URL-name within the children of the given parent site-map entry.<p>
  
  @param parent the parent entry
  @param newName the proposed name
  @param callback the callback to execute