name : StoresComputedFieldCallbacks.php <?php namespace Statamic\Data; use Closure; use Illuminate\Support\Collection; trait StoresComputedFieldCallbacks { protected $computedFieldCallbacks; public function computed(string $field, Closure $callback) { $this->computedFieldCallbacks[$field] = $callback; } public function getComputedCallbacks(): Collection { return collect($this->computedFieldCallbacks); } }