I'm using CakePHP 3 and PHPStorm 9 for my current PHP project and I have a class GroupsTable which is using the TreeBehavior.
In my GroupsController I have the following docblock:
/**
 * Class GroupsController
 *
 * @property GroupsTable $Groups
 *
 * @package App\Controller
 */
With the @property part I make sure that I can access my GroupsTable methods via the autocompletion of PHPStorm by typing $this->Groups-> and then it will show all the available methods of the GroupsTable class.
But, as I said before I added the TreeBehavior to this GroupsTable, and so I want to be able to see the methods of this behavior via the autocompletion as well. I access methods of the behavior via a call like this: $this->Groups->recover(), which is a method defined in the TreeBehavior. You could say CakePHP is "extending"  the behavior, but that's not what's fysically happening, resulting in a lack of autocompletion.
So my question is:
How can I append methods to a class, as if the current class is extending another class.
So in my case:
How can I add the TreeBehavior methods to the GroupsTable, so that PHPStorm "thinks" recover() is part of the GroupsTable class and therefore is able to autocomplete as such?
I tried things like @property TreeBehavior $this and @var TreeBehavior $this in the docblock of the GroupsTable class. I also tried other methods as defined in the PHPDoc manual but nothing seems to work.
I find it hard to believe there is nothing to find about this subject via a search engine or on SO, but I can't seem to find anything about this. Perhaps because there is a term for it which I don't know?