In the Hierarchical drawer, there should be a way to programmatically collapse or expand the drawer items.

Being able to manually trigger the `isItemExpanded` check would be helpful in this. The conditions that make an item expanded could be changed and then the check triggered. For example, if the callback is:

isItemExpanded: DrawerItemExpandedFn = (item): boolean => {
    return this.expandedIndices.indexOf(item.id) >= 0;
  }