function currentUserPersonalCollections(collectionList, userID) {
  return collectionList
    .filter(l => l.personal_owner_id === userID)
    .map(preparePersonalCollection);
}
// get the top level collection that matches the current user ID
get the top level collection that matches the current user ID
get the top level collection that matches the current user ID
function currentUserPersonalCollections(collectionList, userID) {
  return collectionList
    .filter(l => l.personal_owner_id === userID)
    .map(preparePersonalCollection);
}
function currentUserPersonalCollections ( collectionList , userID ) { return collectionList . filter ( l => l . personal_owner_id === userID ) . map ( preparePersonalCollection ) ; }
get the top level collection that matches the current user ID
get the top level collection that matches the current user ID