Extending view method

ReleasesController.php

<?php
namespace App\Controller\Api;

/**
 * Releases Controller
 *
 * @property \App\Model\Table\ReleasesTable $Releases
 */
class ReleasesController extends ApiAppController
{
    public function full($id)
    {
        $this->Crud->on('beforeFind', function(\Cake\Event\Event $event) {
            $event->getSubject()->query->contain([
                'Builds',
                'Products',
                'Builds.Artifacts'
            ]);
        });

        return $this->Crud->execute();
    }
}