Learn Delegate.

DelegateTest.cs

using UnityEngine;
using System.Collections;

public class DelegateTest : MonoBehaviour {
  delegate void someDelegate();
	public class Person{
	     private string name;


	     public Person( string naming ){
			name = naming;
	     }
	     public void SayName(){
	          Debug.Log("my name is"+name);
	     }
	}

	public class delegateTest{
	    public void method()
		{
		     Person p1 = new Person("Apple");
		     Person p2 = new Person("Orange");
		     
		     someDelegate dlgt = p1.SayName;
		     dlgt += p2.SayName;

		     dlgt();
		}
	}

	// Use this for initialization
	void Start () {
		delegateTest test = new delegateTest();
		test.method();			
	}
	
	// Update is called once per frame
	void Update () {
	
	}
}