```ts
const CollapsableContainer: React.FC<React.PropsWithChildren<{
  isOpen: boolean;
  badgeCount?: number;
  openStyling?: string;
  headerEndContent?: React.ReactElement;
  footerContent?: React.ReactElement;
  collapseToggleAriaLabel?: string;
  icon: IconSource;
  title: string;
  testId?: string;
  onToggle: (currentOpenState) => void;
  scrollElementRef?: React.RefObject<HTMLDivElement>;
}>>;
```