class A
{
    /// <summary>
    /// <see cref="Foo{T}(T)"/>
    /// </summary>
    static void Foo<T>(T x)
    {
    }
}

class A
{
    /// <summary>
    /// <see cref="Foo{S}(T)"/>
    /// </summary>
    static void Foo<S>(S x)
    {
    }
}