interface I1
{

    static abstract void M1();
}

class C1_1 : I1
{
    // Implicit implementation
    public static void M1() { }    
}

class C1_2 : I1
{
    // Explicit implementation
    static void I1.M1() { }
}

interface I2
{
    abstract static int P2 { get; set; }
}

class C2_1 : I2
{
    // Implicit implementation
    public static int P2 { get; set; }
}

class C2_2 : I2
{
    // Explicit implementation
    static int I2.P2 { get; set; }
}

interface I3
{
    abstract static event System.Action E3;
}

class C3_1 : I3
{
    // Implicit implementation
    public static event System.Action E3;
}

class C3_2 : I3
{
    // Explicit implementation
    static event System.Action I3.E3
    {
        add { }
        remove { }
    }
}