I have a class named `Category`, and it has a member `type Object`, so far so good.
But then in one place the compiled code (or JVM) does not understand that it is not `java.lang.Object`, and tries to find a method that takes `java.lang.Object` while the methods I have takes some path-dependent type named `Object`.

So, to avoid this stupidity with JVM (or scala compiler), I have to find an alternative name. Can't figure out what it can be. Just `O` (and `A` for arrows?)

I'm in panic.