Sailpoint Identity IQ CertificationSignOffApprover Rule

We have seen many time to send the Completion Notification , when the Access Review is completed CertificationSignOffApprover Rule can be used to send the notification , here is the sample code for using this Rule. 

  import java.util.Map;
  import java.util.List;
  import java.util.Arrays;
  import sailpoint.object.Identity;
  import sailpoint.api.SailPointContext;
  import sailpoint.object.Certification;
  import sailpoint.object.EmailOptions;
  import sailpoint.object.EmailTemplate; 
  import sailpoint.object.SignOffHistory; 
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;

  System.out.println("Entering Certification Sign Off Rule.");


  List signOffList=certification.getSignOffHistory();
  System.out.println("signOffList : " + signOffList);


  for(SignOffHistory signOffHistory:signOffList){
    if(signOffHistory.getSignerName().equalsIgnoreCase("spadmin")){      
      System.out.println("signOffHistory.getSignerName() : " + signOffHistory.getSignerName());
      return null;
    }
  }

  Date activationDate = certification.getActivated();
  System.out.println("activationDate : " + activationDate);

  if (activationDate != null) {

    List certifiers = certification.getCertifiers();
    Identity certifier = context.getObjectByName(Identity.class,certifiers.get(0).toString());
    System.out.println("certifier : " + certifier);

    List toAddresses = Arrays.asList("");
    if (null != certifier) {
      toAddresses = Arrays.asList(certifier.getEmail());
    }

    String tplName = "Certification Completion Notification";
    EmailTemplate template = context.getObjectByName(EmailTemplate.class, tplName);
    if (null == template) {
      System.out.println("Could not find email template [ " + tplName + "]");
      return null;
    }

    Map args = new HashMap();
    args.put("certification", certification);
    args.put("ownerName", certifier.getDisplayName());

    //Send Notifciation of completion 
	
  }
  System.out.println("Exiting Certification Sign Off Rule");

  return null;