class Foo<T extends Qux>
{
    Collection<Bar<T>> bars;
    T qux;

    public Collection<Bar<T>> getBars()
    { return bars; }

    public qux getQux()
    { return qux; }
}

class Bar<T extends Qux>
{
    public void barMethod(T quxarg)
    { // stuff }
}

class SomeClass
{
    public static someMethod(Foo<? extends Qux>... foos)
    {
        for(Foo<? extends Qux> i : foos)
        {
            for(Bar<? extends Qux> j : i.getBars())
            {
                j.barMethod(i.getQux);
                // Error: Cannot convert Qux to capture#1 of ? extends Qux

                // Is there a better way to do this?
                // The type parameter of j is guaranteed to be  the same type parameter as i's
            }
        }
    }
}