Default
Don't do any network i/o, but only return cached data. This can return stale data, or a #FLATPAK_ERROR_NOT_CACHED error, however it is a lot more efficient if you're doing many requests.
Only list refs available from any eventuall sideload repos. (Snce: 1.7)
Flags to alter the behavior of e.g flatpak_installation_list_remote_refs_sync_full().