Keystone-doc for endpoints are wrong. Doesn't match code

Keystone doc uses "faceing" as attibute name in the document. But in the code it is called "interace". Which is correct?

// From code
 @controller.protected
    def create_endpoint(self, context, endpoint):
        ref = self._assign_unique_id(self._normalize_dict(endpoint))
        self._require_attribute(ref, 'service_id')
        self._require_attribute(ref, 'interface')
        self.catalog_api.get_service(context, ref['service_id'])

        ref = self.catalog_api.create_endpoint(context, ref['id'], ref)
        return {'endpoint': ref}

// From doc

Create endpoint: POST /endpoints

Request:

{
    "extra": "--json-blob--",
    "facing": "[admin|public|internal]",
    "name": "name",
    "url": "..."
}