Service class for interacting with the Books service
Describes an entry in a feed of collections
Describes a Book Search collection feed
Describes an annotation link
Describes a books category
Extends the base Link class with Books extensions
Describes an embeddability
Describes an info link
Describes a preview link
User-provided review
Describes a thumbnail link
Describes a viewability
Describes an entry in a feed of Book Search volumes
Describes a Book Search volume feed
Assists in constructing queries for Books volumes