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

class Class<E extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::Class<self::Class::E%>
    : super core::Object::•()
    ;
  method method(covariant-by-class self::Class::E% e) → void {
    e = self::id<self::Class::E%>(e);
    e = self::id<self::Class::E%>(e);
    if(!(e == null)) {
      self::Class::E% e2 = e{self::Class::E% & core::Object /* '%' & '!' = '!' */};
      e2 = self::id<self::Class::E%>(e{self::Class::E% & core::Object /* '%' & '!' = '!' */});
      e2 = self::id<self::Class::E%>(e{self::Class::E% & core::Object /* '%' & '!' = '!' */});
      e2 = self::id<self::Class::E%>(e2);
      e2 = self::id<self::Class::E%>(e2);
    }
  }
}
static method id<T extends core::Object? = dynamic>(self::id::T% t) → self::id::T%
  return t;
static method main() → dynamic {}