name : ContainsCascadingData.php <?php namespace Statamic\Data; trait ContainsCascadingData { protected $cascade; public function cascade($key = null, $default = null) { if (is_null($key)) { return $this->cascade; } if (is_array($key)) { $this->cascade = collect($key); return $this; } return $this->cascade->get($key, $default); } }