/**
  * Get Agent Scheme Number from different process
  *
  * @param SystemApplicationClient clientContext 
  * @param string linkRef
  * @return string
  */
 public function getAgentSchemeNumberByLinkRef(SystemApplicationClient $clientContext, $linkRef)
 {
     $response = $clientContext->getAgentBranch(array('linkRef' => $linkRef));
     return $response['agentSchemeNumber'];
 }