Steve Ebersole ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-15949 ( https://hibernate.atlassian.net/browse/HHH-15949?atlOrigin=eyJpIjoiNmIyMT... ) Re: MetadataBuilderContributor is JPA bootstrap only (isn't discoverable) ( https://hibernate.atlassian.net/browse/HHH-15949?atlOrigin=eyJpIjoiNmIyMT... ) We use Java service loading in lots of places. We probably should collect them in one place for documenting. Not sure what you mean by obvious. Both FunctionContributor and TypeContributor even mention they can be loaded as a Java service ( https://hibernate.atlassian.net/browse/HHH-15949#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15949#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100213- sha1:b01baad )