$role->kirby()
Returns the parent Kirby instance
$role->kirby(): Kirby\Cms\AppReturn type
Parent class
  Kirby\Cms\Role    inherited from Kirby\Cms\Model  
Returns the parent Kirby instance
$role->kirby(): Kirby\Cms\App
  Kirby\Cms\Role    inherited from Kirby\Cms\Model