c# - Provide a .NET method as a delegate callback

Question

What is the syntax to pass .NET method as a delegate callback to a .NET object in PowerShell.

For example:

C#:

public class Class1
{
    public static void MyMethod(Action<object> obj)
    {
         obj("Hey!");
    }
}

public class Class2
{
    public static void Callback(object obj)
    {
         Console.Writeline(obj.ToString());
    }
}

PowerShell:

[Class1]::MyMethod([Class2]::Callback)

This doesn't work.

Answer 1

Working code via Adam's and Oisin's chat.

Add-Type -Language CSharpVersion3 -TypeDefinition @"
using System;

public class Class1
{
    public static void MyMethod(Action<object> obj)
    {
         obj("Hey!");
    }
}

public class Class2
{
    public static void Callback(object obj)
    {
         Console.WriteLine(obj.ToString());
    }
}
"@

$method   = [Class2].GetMethod("Callback") 
$delegate = [System.Delegate]::CreateDelegate([System.Action[Object]], $null, $method)

[Class1]::MyMethod($delegate)