linux-packaging-mono/mcs/tests/gtest-optional-21.cs

using System.Runtime.InteropServices;

partial class C
{
	public static void Foo (C c, [Optional] C c2)
	{
	}
}

partial class C
{
	public static void Foo2 ([Optional] C c2)
	{
	}

	public static void Main ()
	{
	}
}