Getting the topmost parent

Suppose you have a runtme generated gameobject hierarchy like this (names not actually similar):

   Another Object
      And Another
        And yet another object
            Object that is the child of a child (etc)

If you are the “object that is the child of a child (etc)” how do you get your topmost parent?

It’s a mystery how you have missed that. However just in case you really haven’t found it (neither in the documentation nor via google): Transform.root.