org.nuxeo.ecm.platform.comment.service.RelationContrib
This component defines the relation-related config for comments.
org.nuxeo.ecm.platform.comment.impl.CommentConverterImpl
documentComments
http://www.nuxeo.org/comments/uid
http://www.nuxeo.org/document/uid
http://www.nuxeo.org/predicates/isCommentFor