library test /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

class C<T extends core::Object? = dynamic> extends core::Object {
  covariant-by-class field self::C::T% t;
  constructor •(self::C::T% t) → self::C<self::C::T%>
    ;
}
static method test(core::num y) → dynamic
  ;
static method main() → dynamic
  ;