Function fetch_paged 

pub async fn fetch_paged<P: Page>(
    client: &ApiClient,
    path: &str,
    limits: PageLimits,
) -> Result<(Vec<P::Item>, PageInfo)>

Follow a paginated endpoint, collecting items until the limit, the budget, or the data runs out.

path is the first request, and it should carry whatever page-size parameter the endpoint wants. Subsequent requests come from the server’s own cursor, so the caller never rebuilds the query itself — appending a token to a path that already has one is how a third page ends up with two nextPageToken parameters.