Returned by useFetchState.
state: FetchState<T>
Edits the loaded data, as when a next page comes in. It does nothing until loaded.
reload: () => void
Loads the key's data again, and replaces the data loaded with it, as the
live pages do on useOnReconnect. Until it arrives, the data shown stays,
and so it does if the load fails. It does nothing until loaded.