/**
  * The getPublisherListByAgencyId method returns a list of publishers for
  * a specified agency.
  *
  * @access public
  *
  * @param string $sessionId
  * @param integer $agencyId
  * @param array &$aPublisherList  Array of OA_Dll_PublisherInfo classes
  *
  * @return boolean
  */
 function getPublisherListByAgencyId($sessionId, $agencyId, &$aPublisherList)
 {
     if ($this->verifySession($sessionId)) {
         return $this->_validateResult($this->_dllPublisher->getPublisherListByAgencyId($agencyId, $aPublisherList));
     } else {
         return false;
     }
 }