title: Phalcon\Mvc\Model's afterFetch
body: <p>say I have:</p>
  
  <pre><code>class Book extends Model
  {
      private $someVar = 1;
  
      public function afterFetch()
      {
          if ($this-&gt;var == 2) $this-&gt;doSomething();
      }
  
      public function setVar($val)
      {
          $this-&gt;someVar = $val;
      }
  
      public function doSomething(){}
  }
  
  $book = Book::find($someId);
  </code></pre>
  
  <p>Question: how can I, in the above scenario, get <em>$this->someVar</em> to be equal to <strong>2</strong> in afterFetch() ?</p>
  
  <p>Thanks!</p>