Retrieves book in PDF format

This endpoint uses the BookId returned from any of the request above. Returns the URL to load the book for the book ID requested. The URL will be in JSON format, the final book will be in PDF format. NOTE -- The execution of this endpoint requires an extra step within the developer portal due to authentication limitations. When using the actual API, a successful response for this endpoint will be the PDF book rather than the URL to the PDF. The actual endpoint is