See also comments on:

• http://staging.in.relation.to/2017/07/18/hibernate-search-5-8-0-Beta4/

We should either clarify this in the docs or introduce an explicit on/off toggle for the digest.

I think my preference would be to require an explicit "enable digest signing" true/false property as that simplifies build scripts for end users. This would imply yet another property though so I'm open to suggestions.