/**
  * The getCampaign method returns the campaign details for a specified campaign.
  *
  * @access public
  *
  * @param string $sessionId
  * @param integer $campaignId
  * @param OA_Dll_CampaignInfo &$oCampaign
  *
  * @return boolean
  */
 function getCampaign($sessionId, $campaignId, &$oCampaign)
 {
     if ($this->verifySession($sessionId)) {
         return $this->_validateResult($this->_dllCampaign->getCampaign($campaignId, $oCampaign));
     } else {
         return false;
     }
 }