Unity C# : How to use Generators example?

GeneratorExample.cs

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

public class Generator : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        var allNumbers = CosmosCount();
        
        foreach (float num in allNumbers)
        {
            Debug.Log("LOL : " + num);
        }
        
    }


    public static IEnumerable<float> CosmosCount()
    {
        for(int i = 0; i < int.MaxValue; i++)
        {
            if(i < 1000)
            {
                yield return i;
            }
            else
            {
                yield break;
            }
        }
    }

    // Update is called once per frame
    void Update()
    {

        
    }
}