Folder path relative to serverRelativeUrl (e.g. 'Shared Documents/Reports').
OptionalsignalCancels the request. Abort yields a Failure with code ABORTED.
OptionaltimeoutSocket inactivity timeout in milliseconds: the request fails with code
TIMEOUT if no bytes arrive for this long. It is not a cap on total
duration; use signal with AbortSignal.timeout() for that.
Omit for no timeout.
Options accepted by every action in addition to its own parameters.