One entry of feed_items, as the app's feed answer carries it: a post
(media_or_ad), an Explore story (explore_story) with its own media, the
"You're all caught up" line (end_of_feed_demarcator), the Threads block
(threads_in_feed_unit), the suggested-reels block (clips_netego), or —
because the server's list is an open union — an entry of a kind the library
does not model (TimelineFeedUnknownItem).
One entry of
feed_items, as the app's feed answer carries it: a post (media_or_ad), an Explore story (explore_story) with its own media, the "You're all caught up" line (end_of_feed_demarcator), the Threads block (threads_in_feed_unit), the suggested-reels block (clips_netego), or — because the server's list is an open union — an entry of a kind the library does not model (TimelineFeedUnknownItem).