Is there a 'contains' functionality on a collection property of a domain object for createCriteria?
===

I have an Auction domain object and a User domain object.  An Auction `hasMany` Users.

What I'd like to do, using `createCriteria`, is something like this:

    def c = Auction.createCriteria()
    def l = c.list (max: maxVar, offset: offsetVar) {
        contains("users", thisUser)
    }

Though, `contains` is not in the list of acceptable nodes: [createCriteria description page][1].

Is there any way to implement this functionality?

To be clear, is there a way to have the criteria be that a specified User object is contained within a collection property of the Auction?


  [1]: http://grails.org/doc/latest/ref/Domain%20Classes/createCriteria.html%20%22