I'm submitting a ...

• [ x ] bug report

Current behavior:

Documentation for $setValidity shows its signature as

$setValidity();

Implementation actually takes three arguments: the validation error key, the state to set the key to, and a "controller" third argument that (based on how it's used) appears to be the controller for the edit form.

Expected / new behavior:

Please update documentation to match implementation. A code snippet would also help to clarify the meaning of the arguments.

Angular version: master branch