Optionalfromtrue when the page came from the list the host keeps.
The same list as tracks.
OptionallimitThe limit applied.
OptionaloffsetThe offset applied.
Always true here; a failed call resolves with ApiFailure instead.
Tracks in the library.
The page in library order; index is the position in the library.
One page of
library.getAll, aslibrary.getAll()resolves it: the synchronous answer, or thelibrary:getAllResultpayload when the host built the page off the main thread.