Is it possible to use private field conventions for Fluent NHibernate Automapping

public class A
    {
        private List<B>  myField;

        public A()
        {
            myField = new List<B>();
        }

        public IList<B> MyBs
        {
            get { return myField; }
        }
    }

public class A
{
    private List<B>  myBs;

    public A()
    {
        myField = new List<B>();
    }

    public IList<B> MyBs
    {
        get { return myField; }
    }
}

public class AMap : ClassMap<A> {
        public AMap() {
            HasMany(x => x.MyBs).Access.CamelCaseField()
        }
}