SaZ>оффтоп: Владимир, не томите, выкладывайте уже

class X<A,B,C,D,E>{class Y:X<Y,Y,Y,Y,Y>{Y.Y.Y.Y.Y.Y.Y.Y.Y y;}}

struct R<T>{T a,b,c,d;}struct A<T>{R<R<R<R<T>>>>m;}struct B{A<A<A<A<int>>>>q;static void Main(){}}

struct R<T1, T2, T3>
{
    T1 m1;
    T2 m2;
    T3 m3;
}

struct R3<T> 
{
    R<T, T, T> m;
}

struct A<T>
{
    R3<R3<R3<T>>> m;
}

struct B<T>
{
    A<A<A<T>>> m;
}

struct C<T>
{
    B<B<T>> m;
}

class R
{
    C<int> q;         
    static void Main(string[] args)
    {
        
    }
}

N>class X<A,B,C,D,E>{class Y:X<Y,Y,Y,Y,Y>{Y.Y.Y.Y.Y.Y.Y.Y.Y y;}}
N>

template<typename A, typename B, typename C, typename D, typename E>
struct X { 
    struct Y : public X<Y, Y, Y, Y, Y> { 
        typedef X<Y, Y, Y, Y, Y> base;
        typename base::Y::base::Y::base::Y::base::Y::base::Y::base::Y::base::Y *x;
    }; 
};

namespace zatravka
{
    public class DAttribute : System.Attribute
    {
        static DAttribute()
        {
            System.Threading.Thread.Sleep(70000);
        }
    }

    class A
    {
        [D]
        static void Main(string[] args)
        {
            
        }
    }
}

At compile time, attributes convert security declarations to a serialized form in metadata. Declarative security data in metadata is created from the permission that this method returns that corresponds to this attribute.