How to make an inner class Parcelable

I need to know how to make an inner class Parcelable so that objects of its type can be passed via AIDL to a remote service. I cannot find any information on this.

Here is example code of what I am trying to accomplish, but it doesn't compile because the CREATOR in the Bar class cannot be static (ie because it's in an inner class). I cannot make Bar a static inner class and I cannot move Bar outside of the Foo class (other dependencies within the system). I also need to know how I would reference the Bar class from within an AIDL file. Any help is greatly appreciated.

public class Foo implements Parcelable
{
    private int a;

    public Foo()
    {
    }

    public Foo(Parcel source)
    {
        this.a = source.readInt();
    }

    public int describeContents()
    {
        return 0;
    }

    public void writeToParcel(Parcel dest, int flags)
    {
        dest.writeInt(this.a);
    }

    public static final Parcelable.Creator<Foo> CREATOR
    = new Parcelable.Creator<Foo>()
    {
        ...
    }

    public class Bar implements Parcelable
    {
        private int b;

        public Bar()
        {
        }

        public Bar(Parcel source)
        {
            this.b = source.readInt();
        }

        public int describeContents()
        {
            return 0;
        }

        public void writeToParcel(Parcel dest, int flags)
        {
            dest.writeInt(this.b);
        }

        public static final Parcelable.Creator<Bar> CREATOR
        = new Parcelable.Creator<Bar>()
        {
            ...
        }
    }
}