How to create custom authorization in CakePHP?

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namespace AppAuthorization;

use AuthorizationAuthorizationAuthorizationInterface;
use AuthorizationAuthorizationIdentityInterface;
use AuthorizationPolicyResultInterface;
use AuthorizationPolicyResult;

class CustomAuthorization implements AuthorizationInterface
{
    // Implement your custom authorization logic here
}

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use AuthorizationAuthorizationService;
use AppAuthorizationCustomAuthorization;

$authorization = new AuthorizationService();

$authorization->setAuthorizationChecker(new CustomAuthorization());

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public function edit($id)
{
    $article = $this->Articles->get($id);

    if (!$this->Authorization->can($article, 'update')) {
        $this->Flash->error(__('You are not authorized to update this article.'));
        return $this->redirect(['action' => 'index']);
    }

    if ($this->request->is(['patch', 'post', 'put'])) {
        $article = $this->Articles->patchEntity($article, $this->request->getData());
        if ($this->Articles->save($article)) {
            $this->Flash->success(__('The article has been saved.'));

            return $this->redirect(['action' => 'index']);
        }
        $this->Flash->error(__('The article could not be saved. Please, try again.'));
    }
    $this->set(compact('article'));
}