yii\base\Component::hasMethod PHP Method

    public function hasMethod($name, $checkBehaviors = true)
    {
        if (method_exists($this, $name)) {
            return true;
        } elseif ($checkBehaviors) {
            $this->ensureBehaviors();
            foreach ($this->_behaviors as $behavior) {
                if ($behavior->hasMethod($name)) {
                    return true;
                }
            }
        }
        return false;
    }

 /**
  * @inheritdoc
  */
 public function hasMethod($name, $checkBehaviors = true)
 {
     if (method_exists($this->obj, $name)) {
         return true;
     }
     return parent::hasMethod($name, $checkBehaviors);
 }