In openpojo how can I ignore the type of list whether arraylist or collection?

[iAshwinK]

I'm using openpojo library having version 0.8.10. There is a scenario where I've following class:

public class Foo {
  //few variables & objects
  List<Bar> bars;

  //all objects/variables & lists are constructed through constructor
  public Foo(...,...,List<Bar> bars){
    this.bars =bars;
  }
  //no setters
  //getters are there
  public Collection<Bar> getBars(){
    return null != bars ? Collection.unmodifiableCollection(bars) : null;
  }
}

In one of the test class, it has getter & setter validation using openpojo is as follow:

import com.openpojo.reflection.impl.PojoClassFactory;
import com.openpojo.validation.Validator;
import com.openpojo.validation.ValidatorBuilder;
import com.openpojo.validation.test.impl.GetterTester;
import com.openpojo.validation.test.impl.SetterTester;

@ExtendWith(SpringExtension.class)
public class FooTest{

  @FooTest
  public void testGettersAndSetters(){
    PojoClass pojo = PojoClassFactory.getPojoClass(Foo.class);

    Validator Validator = ValidatorBuilder.create()
    .with(new SetterTesters())
    .with(new GetterTesters())
    .build();

    Validator.validate(pojo);
  }

}

After running the above test, I'm getting the following exception:

java.lang.AssertionError: Getter returned non equal value for field 
Expected: java.util.ArrayList<[Bar{....}
Actual: java.util.Collections$UnmodifiableCollection<[Bar{....

The Bar class gonna remain the same, what changes I could do in test classes so that I can match the ArrayList with Collections.unmodifiableCollection?

I've raised same on StackOverflow as well: https://stackoverflow.com/questions/70953219/in-openpojo-how-can-i-ignore-the-type-of-list-whether-arraylist-or-collection