How do I Check if an object has a child that is a specific object?

I need to check if an object has a child which is a specific type of object, but it seems there's no condition for this, and I can't think of a workaround, is there a way to do what I'm trying to do?

you can use the family. instead of uid, you can use instance variable or even the name of the object to pick it.

drive.google.com/file/d/1xw15gFDvEn7cSTtNSsOv20G_WGoCn6a5/view