Groovy script to add rep policy for the results pulled in from xpath query

AddReppolicy.groovy

import org.apache.jackrabbit.api.JackrabbitSession;
import org.apache.jackrabbit.api.security.JackrabbitAccessControlList;
import org.apache.jackrabbit.api.security.principal.PrincipalManager;
import org.apache.jackrabbit.commons.jackrabbit.authorization.AccessControlUtils;
import javax.jcr.*;

def queryManager = session.workspace.queryManager;
def statement = "/jcr:root/content/geeksdemo//*[(jcr:content/@cq:template = '/conf/geeksdemo/settings/wcm/templates/page')]"
def query = queryManager.createQuery(statement, 'xpath')
final def result = query.execute()
result.nodes.each {
  node ->
      AccessControlManager accessControlManager = session.getAccessControlManager();
      JackrabbitAccessControlList specificPathGroupAcl = AccessControlUtils.getAccessControlList(session, node.path);
      if (specificPathGroupAcl != null) {
          JackrabbitSession jackrabbitSession = (JackrabbitSession) session;
          PrincipalManager principalManager = jackrabbitSession.getPrincipalManager();
          Principal principal = principalManager.getPrincipal("admin-test");
          Privilege[] privileges = AccessControlUtils.privilegesFromNames(session, Privilege.JCR_REMOVE_NODE);
          specificPathGroupAcl.addEntry(principal, privileges, false);
          accessControlManager.setPolicy(specificPathGroupAcl.getPath(), specificPathGroupAcl);
          session.save();
          println "rep policy added";
      }
  }