How can I map the owner attribute for Entitlement in IdentityIQ using rule editor in Bean shell?

Question

Here is my scripting:

import sailpoint.object.QueryOptions;
import sailpoint.object.Identity;
import java.util.*;
import sailpoint.api.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import sailpoint.object.*

//Find the owner with null

identify owner = null;

// Set/declare the "spadmin" Identity's owner attribute 

String ownerAttribute  = " ";

//When all of the owner info in the subgroup are null, default to spadmin.

if (owner == null) {
   log.info("onwer")  
   return "spadmin";

}

Get the error of exception

Exception during aggregation of CN=Active Directory Engineering,OU=Privileged,OU=Groups,DC=DS,DC=CIC,DC=HOV. Reason: BeanShell script error: bsh.ParseException: Parse error at line 11, column 1. Encountered: String BSF info: AdminOwnerRule at line: 0 column: columnNo