/**
  * set password
  *
  * @param string $_credential
  * @return Tinebase_Auth_Imap
  */
 public function setCredential($_credential)
 {
     parent::setPassword($_credential);
     return $this;
 }
 /**
  * set password
  *
  * @param string $_credential
  * @return Tinebase_Auth_Imap
  */
 public function setCredential($_credential)
 {
     return parent::setPassword($_credential);
 }