GetChildByNameRecursively returns a GraphicalUiElement by the argument name. This method is recursive so it searches the entire child hierarchy to find a child. If no match is found, null is returned.
Note that this performs a depth-first search, returning the first instance found. Therefore, if multiple items exist with the same name, this may result in confusion.
The following code can be used to find a Text by the name TextInstance and set its Text property to "You found me":