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

class C<X extends self::C<self::C::X%, self::C::X%>? = self::C<dynamic, dynamic>?, Y extends self::C<self::C::Y%, self::C::Y%>? = self::C<dynamic, dynamic>?> extends core::Object {
  covariant-by-class field self::C::X% x;
  constructor •(self::C::X% x) → self::C<self::C::X%, self::C::Y%>
    ;
  method m(covariant-by-class self::C::X% x, covariant-by-class self::C::Y% y) → core::Object
    ;
}
static field core::bool b;
static method main() → dynamic
  ;