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

typedef F<contravariant T extends core::Object? = dynamic> = (T%) → void;
class C<T extends core::Object? = dynamic> extends core::Object {
  field (self::C::T%) → void y = throw "";
  synthetic constructor •() → self::C<self::C::T%>
    : super core::Object::•()
    ;
  method f() → void {
    (self::C::T%) → void x = this.{self::C::y}{(self::C::T%) → void};
  }
}
static method g(self::C<core::num> c) → void {
  (core::num) → void x = c.{self::C::y}{(core::num) → void} as{TypeError,CovarianceCheck,ForNonNullableByDefault} (core::num) → void;
}
static method main() → void {}