Self url should point to the RESTful URL.
Discovery plugin.
Add plugin.
Set plugin.
Fix index
Add filter.
sort
comments
Fix sort by URL.
Remove the discovery plugin(s) from the list.
Generalize operator check.
Fix filter logic.
Add self
Better get self callback.
PHPdocs.
Add todo
Review cleanups.
Add test
Allow processing data provider options.
Remove wron method.