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Showing content from https://docs.unity3d.com/Manual/sprite/../../ScriptReference/Events.UnityEvent_4.html below:

Unity - Scripting API: UnityEvent<T0,T1,T2,T3>

UnityEvent<T0,T1,T2,T3>

class in UnityEngine.Events

Inherits from:Events.UnityEventBase

Implemented in:UnityEngine.CoreModule

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Generics are supported, specify type parameters on initialization as shown in the example. Refer to Configure callbacks in the Inspector for details on configuring callbacks in the Inspector window.

using UnityEngine;
using UnityEngine.Events;public class ExampleClass : MonoBehaviour
{
    UnityEvent<int, int, int, int> m_MyEvent;
    void Start()
    {
        if (m_MyEvent == null)
            m_MyEvent = new UnityEvent<int, int, int, int>();
        m_MyEvent.AddListener(DoSomething);
    }
    void Update()
    {
        if (Input.anyKeyDown && m_MyEvent != null)
        {
            m_MyEvent.Invoke(5, 6, 7, 8);
        }
    }
    void DoSomething(int i, int j, int k, int l)
    {
        Debug.Log("Callback called " + i + ", " + j + ", " + k + ", " + l);
    }
}

Note: UnityEvent can also be awaited in any async method.

Inherited Members Static Methods Method Description GetValidMethodInfo Given an object, function name, and a list of argument types; find the method that matches.

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