Question How to get father's animation?

I try to use two objects, one called father, and its child

I put animator into father, and drag child into father hierarchy.

The I drag my script into child, because I want to use child to control father's animation

The following is my scripts in child"

public class Controller : MonoBehaviour
{
// Start is called before the first frame update

Animator ani;
void Start()
{

ani = this.parent.GetComponent<Animator>();--->Is that correct? ""this"" indicates child?
}

// Update is called once per frame
void Update()
{

}
}