This is the book of the week:

Props retrieved using new method:

Title: $props.get("title")
Author: $props.get("author")
Publisher: $props.get("publisher")
ISBN: $props.get("isbn")

Props retrieved using old method:

Title: $props2.get("title")
Author: $props2.get("author")
Publisher: $props2.get("publisher")
ISBN: $props2.get("isbn")