Reify generic class reflection given parameter class reflection

I have a generic class that I need to return complete type info for, and I have the class information for the generic parameter type. How might I upgrade the class information for the generic type parameter?

public class MyClass<T> {
  String key;
  T value;

  Class<MyClass> getTypeInfo(Class<T> cls) {
    // How do I upgrade this with the reified type info in cls?
    return MyClass.class;
  }
}

Ultimately, I'm writing a deserialization schema for Flink, and Need to return a reified class information in getProducedType as part of the interface. The class returned by the deserializer is a something like MyClass where I know the class information of T.

https://www.logicbig.com/how-to/code-snippets/jcode-reflection-class-gettypeparameters.html