Implements AccessCheckInterface::access().
Overrides AccessCheckInterface::access
public function access(Route $route, Request $request) {
// @todo Request argument validation and object loading should happen
// elsewhere in the request processing pipeline:
// http://drupal.org/node/1798214.
$this
->validateAndUpcastRequestAttributes($request);
return $this
->accessEditEntityField($request->attributes
->get('entity'), $request->attributes
->get('field_name'));
}