4 variations of the Main method in c#?

Question

JavaScript

What are 4 variations of the Main method?

Answer 1

class Authorized {
  constructor() {
    this.jwt = require('jsonwebtoken')
    this.secretKey = 'dSjkLsSjerIfkL'
  }
...

Answer 2

public static void Main()
{
}

public static void Main(string[] args)
{
}

public static int Main()
{
}

public static int Main(string[] args)
{
}

Answer 3

C# 7.1

public static void Main();
public static int Main();
public static void Main(string[] args);
public static int Main(string[] args);
public static Task Main();
public static Task<int> Main();
public static Task Main(string[] args);
public static Task<int> Main(string[] args);