|_. collection state|_. is_trashed|_. trash_at|_. delete_at|_. get|_. list|_. list?include_trash=true|_. can be modified|
|persisted collection|false |null |null |yes |yes |yes |yes |
|expiring collection|false |future |future |yes |yes |yes |yes |
|_. collection state|_. is_trashed|_. trash_at|_. delete_at|_. get|_. list|_. list?include_trash=true|_. can be modified|
|persisted collection|false |null |null |yes |yes |yes |yes |
|expiring collection|false |future |future |yes |yes |yes |yes |