Using HashMap w/ ExpandableListAdapter

I'm subclassing BaseExpandableListAdapter to create my ExpandableListAdapter. I want to use my HashMap<S开发者_高级运维tring, ArrayList<Object>> to make the parents the keys and the children be the corresponding values (the stuff in the ArrayList<Object>).

Having a bit of trouble figuring out how to override all of the BaseExpandableListAdapter methods to get this to work properly. Can anyone point me in the right direction?