Is there a java wildcards equivalent in csharp?

Question

Java

Java has such a thing as wildcards, which is an extension of generic types.
Example using <?>

public abstract class AAA<T extends BBB<?>> extends CCC<T>{}

How to display <?> in C#

public abstract class AAA<T> : CCC<T> where T : BBB<как?>{}

I will be grateful for the answer.

Answer 1

Well, there are no wildcards in Sharpe. You can just explicitly specify the type in the generic.

public abstract class AAA<T,T1> : CCC<T> where T : BBB<T1>

Answer 2

dynamic ?