MyInputSampleTest.cs

using UnityEngine;
using UnityEngine.Experimental.Input;

public class MyInputSampleTest : MonoBehaviour, ISampleActions
{
    [SerializeField] MyInputSample input;

    private void Awake()
    {
        input.Sample.SetCallbacks(this);
    }

    private void OnEnable()
    {
        input.Enable();
    }

    private void OnDisable()
    {
        input.Disable();
    }

    public void OnFire(InputAction.CallbackContext context)
    {
        Debug.Log("Fire");
    }

    public void OnMousePosiiton(InputAction.CallbackContext context)
    {
        var value = context.ReadValue<Vector2>();
        Debug.Log(value);
    }
}