function onSortableSortedDefaultAnnouncement({dragEvent}) {
  const sourceText =
    dragEvent.source.textContent.trim() ||
    dragEvent.source.id ||
    'sortable element';

  if (dragEvent.over) {
    const overText =
      dragEvent.over.textContent.trim() ||
      dragEvent.over.id ||
      'sortable element';
    const isFollowing =
      dragEvent.source.compareDocumentPosition(dragEvent.over) &
      Node.DOCUMENT_POSITION_FOLLOWING;

    if (isFollowing) {
      return `Placed ${sourceText} after ${overText}`;
    } else {
      return `Placed ${sourceText} before ${overText}`;
    }
  } else {
    // need to figure out how to compute container name
    return `Placed ${sourceText} into a different container`;
  }
}
Returns announcement message when a Draggable element has been sorted with another Draggable element
or moved into a new container
@param {SortableSortedEvent} sortableEvent
@return {String}