/**
  * 
  * 
  * @param baseURL 
  * @param repositoryName 
  * @param adminEmails: administrator's e-mail address (charactor strings or array)
  * 
  */
 function __construct($baseURL = null, $repositoryName = null, $adminEmails = null)
 {
     /* constructer for PHP5 */
     OAIPMH::OAIPMH($baseURL, $repositoryName, $adminEmails);
 }