Unity/My project/Library/PackageCache/com.unity.ugui@1.0.0/Tests/Runtime/EventSystem/InputModuleTests/PointerClickCallbackCheck.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
public class PointerClickCallbackCheck : MonoBehaviour, IPointerDownHandler
{
    public bool pointerDown = false;

    public void OnPointerDown(PointerEventData eventData)
    {
        pointerDown = true;
    }
}