3.0 - How to print/debug from Controller like Cake 2.xx

Dear All,

Is there any way to print from Controller?

For example,

I have a form like 

<?php

    echo $this->Form->create($article);

    echo $this->Form->input('title');

    echo $this->Form->input('body', ['rows' => '3']);

    echo $this->Form->button(__('Save Articles'));

    echo $this->Form->end();

?>

I have function in controller

public function add(){

        $article = $this->Articles->newEntity($this->request->data);

        if($this->request->is('post')){

            if($this->Articles->save($article)){

                $this->Session->setFlash(__('Your article has been saved.'));

                return $this->redirect(['action' => 'index']);

            }

            $this->Session->setFlash(__('Unable to add your article.'));

        }

        

        $this->set(compact('article'));

    }

I want to check by printing via pr() /  dubug() from my add function like i can do from Cakephp 2.xx.

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