Autocomplete, change suggested option from camelCase to Underscores?

When you give a class as a parameter in a method and you type $, PhpStorm gives you options for the variable name. Is there a way you can change the camelCase to Underscore or add the option underscore

Example
You type

public function model(formFactory $

You get the options $formFactory & $factory

Is there a way to get $form_factory?