querydsl-collections with Optional

Cat.java

package cat;

import static com.mysema.query.alias.Alias.$;
import static com.mysema.query.alias.Alias.alias;
import static com.mysema.query.collections.CollQueryFactory.from;

import java.util.ArrayList;
import java.util.Collection;

import com.google.common.base.Optional;

public class Cat {

    private Optional<String> pedigree = Optional.absent();

    public Cat() {
    }

    public Cat(Optional<String> pedigree) {
        this.pedigree = pedigree;
    }

    public Optional<String> getPedigree() {
        return pedigree;
    }

    public static void main(String[] args) {

        Collection<Cat> cats = new ArrayList<>();
        cats.add(new Cat(Optional.<String>absent()));
        cats.add(new Cat(Optional.of("persan")));
        Cat c = alias(Cat.class);

        for (Cat cat : from(c, cats)
                .where($(c.getPedigree()).eq(Optional.of("persan")))
                .list($(c))){
            System.out.println(cat);
        }
    }
}

Exception in thread "main" com.mysema.codegen.CodegenException: Compilation of public class Q_0390602011_1275614662_1275614662_566403833 {

    public static Iterable<cat.Cat> eval(Iterable<cat.Cat> cat_, com.google.common.base.Present a1) {
        java.util.List<cat.Cat> rv = new java.util.ArrayList<cat.Cat>();
        for (cat.Cat cat : cat_) {
            try {
                if (com.mysema.query.collections.CollQueryFunctions.equals(cat.getPedigree(), a1)) {
                    rv.add(cat);
                }
            } catch (NullPointerException npe) { }
        }
        return rv;    }

}

failed.
        /Q_0390602011_1275614662_1275614662_566403833.java:3: error: Present is not public in com.google.common.base; cannot be accessed from outside package
public static Iterable<cat.Cat> eval(Iterable<cat.Cat> cat_, com.google.common.base.Present a1) {
        ^
        1 error

        at com.mysema.codegen.JDKEvaluatorFactory.compile(JDKEvaluatorFactory.java:74)
        at com.mysema.codegen.AbstractEvaluatorFactory.createEvaluator(AbstractEvaluatorFactory.java:128)

querydsl/querydsl#1262