<Fact>
        Public Sub MethodImplementation_27()

            Dim csSource =
"
public interface I1
{
    protected static string M1()
    {
        return ""I1.M1"";
    }
}
"
            Dim csCompiation = GetCSharpCompiation(csSource).EmitToImageReference()

            Dim source1 =
<compilation>
    <file name="c.vb"><![CDATA[
Public Class C
    Implements I1
    Shared Sub Main()
        System.Console.WriteLine(I1.M1())
    End Sub
End Class
]]></file>
</compilation>

            Dim comp1 = CreateCompilation(source1, options:=TestOptions.DebugExe, targetFramework:=TargetFramework.DesktopLatestExtended, references:={csCompiation})
            comp1.AssertTheseDiagnostics(
<error>
BC30390: 'I1.Function M1() As String' is not accessible in this context because it is 'Protected'.
        System.Console.WriteLine(I1.M1())
                                 ~~~~~
</error>)
        End Sub

error CS8707: Target runtime doesn't support 'protected', 'protected internal', or 'private protected' accessibility for a member of an interface.