Bug "CS1022: Type or namespace definition, or end-of-file expected" error.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class grabbable : MonoBehaviour
{
public Transform holding;
public bool held;
Transform tr;

private void Update()
{
if(held)
{
private void holding.GetPositionAndRotation(out Vector3 holdingPoint, out Quaternion rotation);
private void GetPositionAndRotation(out Vector3 position, out Quaternion holdingDirection);
tr.SetPositionAndRotation(holdingPoint position, holdingDirection rotation);
}
}
}