Add method - what is the reason that it doesn't work in this case

Hi,

I would like to ask you with this problem.

I have a class with attribute:


 /** @var \WebApp\Model\Vocabulary repository */
 private $vocabulary;


And in one method I have:
return $this->vocabulary->processVocabularyUpdate($vocabularyUpdate);

The Vocabulary class hasn't implemented the method "processVocabularyUpdate", so the phpstorm to allow me click on add method. But it doesn't add method to the class Vocabulary - it does nothing.

Has someone any idea why it doesn't work?

Thanks