Request analytics for a BookBook - A Book is a container for all Documents in a Case or Loan Application. This container primarily serves as a boundary to correlate data. As such, objects in different Books can never be associated or correlated with each other. to be computed behind the scenes. You'll be notified when they're ready.
You can retrieve the results when they're ready by registering a webhook that listens for the ANALYTICS_COMPLETED event. You can also poll the Async Analytics Result endpoint regularly, although this is less precise.