discussion.groups.get( ) discussion.group.new( name varchar, description varchar ) discussion.group.get( group_id integer ) discussion.group.remove( group_id integer ) discussion.message.new( group_id integer, subject varchar := '', body varchar := '' ) discussion.message.get( message_id varchar ) discussion.feed.new( group_id integer, name varchar ) discussion.feed.remove( feed_id integer ) discussion.comment.new( parent_id varchar, subject varchar := '', body varchar := '' ) discussion.comment.get( comment_id varchar )