Static fields and methods in interfaces in CIL

IntrfTest.il

// test at http://www.compileonline.com/compile_ilasm_online.php

.assembly IntrfTest {}
.assembly extern mscorlib {}
.method static void Main()
{
    .entrypoint
    .maxstack 1
    call void IInterface::StaticMethod()
    call void IInterface::StaticMethod()
    call void IInterface::StaticMethod()
    ret
}

.class public interface IInterface {
    .method public virtual abstract instance int32 Method() {
    }

    .method public static void StaticMethod() {
        ldstr "Inside IInterface.StaticMethod: "
        call void [mscorlib]System.Console::Write(string)
        ldsfld int32 IInterface::Counter
        ldc.i4.1
        add
        dup
        stsfld int32 IInterface::Counter
        call void [mscorlib]System.Console::WriteLine(int32)
        ret
    }

    .field public static int32 Counter
}