class Class<T> {}

class ConcreteClass implements Class<ConcreteClass> {}

typedef F<X extends Class<X>> = X;

class G<X extends Class<X>> {}

F t1() => throw '';
F<dynamic> t2() => throw '';
F<Class> t3() => throw '';
F<Class<dynamic>> t4() => throw '';
F<ConcreteClass> t5() => throw '';
F<Class<ConcreteClass>> t6() => throw '';
F<Object> t7() => throw '';
F<int> t8() => throw '';
G s1() => throw '';
G<dynamic> s2() => throw '';
G<Class> s3() => throw '';
G<Class<dynamic>> s4() => throw '';
G<ConcreteClass> s5() => throw '';
G<Class<ConcreteClass>> s6() => throw '';
G<Object> s7() => throw '';
G<int> s8() => throw '';
method1() {}

class Class1 {
  F t1() => throw '';
  F<dynamic> t2() => throw '';
  F<Class> t3() => throw '';
  F<Class<dynamic>> t4() => throw '';
  F<ConcreteClass> t5() => throw '';
  F<Class<ConcreteClass>> t6() => throw '';
  F<Object> t7() => throw '';
  F<int> t8() => throw '';
  G s1() => throw '';
  G<dynamic> s2() => throw '';
  G<Class> s3() => throw '';
  G<Class<dynamic>> s4() => throw '';
  G<ConcreteClass> s5() => throw '';
  G<Class<ConcreteClass>> s6() => throw '';
  G<Object> s7() => throw '';
  G<int> s8() => throw '';
}

extension Extension1 on int {
  F t1() => throw '';
  F<dynamic> t2() => throw '';
  F<Class> t3() => throw '';
  F<Class<dynamic>> t4() => throw '';
  F<ConcreteClass> t5() => throw '';
  F<Class<ConcreteClass>> t6() => throw '';
  F<Object> t7() => throw '';
  F<int> t8() => throw '';
  G s1() => throw '';
  G<dynamic> s2() => throw '';
  G<Class> s3() => throw '';
  G<Class<dynamic>> s4() => throw '';
  G<ConcreteClass> s5() => throw '';
  G<Class<ConcreteClass>> s6() => throw '';
  G<Object> s7() => throw '';
  G<int> s8() => throw '';
}

main() {}