class Program
{
  static void Main()
  {
    Action<int> action = Console.WriteLine;
    action(123);
  }
}

.class private auto ansi beforefieldinit test.Program
    extends [mscorlib]System.Object
{
    .method public hidebysig specialname rtspecialname instance void .ctor () cil managed 
    {
        IL_0000: ldarg.0
        IL_0001: call instance void [mscorlib]System.Object::.ctor()
        IL_0006: ret
    }

    .method private hidebysig static void Main () cil managed 
    {
        .entrypoint
        .locals init (
            [0] class [mscorlib]System.Action`1<int32> action
        )

        IL_0000: ldnull
        IL_0001: ldftn void [mscorlib]System.Console::WriteLine(int32)
        IL_0007: newobj instance void class [mscorlib]System.Action`1<int32>::.ctor(object,  native int)
        IL_000c: stloc.0
        IL_000d: ldloc.0
        IL_000e: ldc.i4.s 123
        IL_0010: callvirt instance void class [mscorlib]System.Action`1<int32>::Invoke(!0)
        IL_0015: ret
    }
}