Indeed, the method needs to be static when setting the factoryclass and it can be non-static when setting a factoryservice

No, it's not quite right yet, unfortunately. If you look at line 80:

When you specify the class to use for the factory (viafactory_class)
the method will be called statically. If the factory itself should be instantiated
and the resulting object's method called (as in this example), configure the
factory itself as a service:

So, we're using this one example to explain bothfactory_class andfactory_service. I think weshould include this change, but reword this paragraph to something like:

When you specify the class to use for the factory (viafactory_class)
the method will be called statically. If the factory itself should be instantiated
and the resulting object's method called, configure the factory itself as a service.
In this case, the method (e.g.get) should be changed to be non-static:

@AlaaAttya Can you make this change please? :)

Thanks!

@weaverryan done :)

Awesome, thanks so much@AlaaAttya!