library test;
import self as self;
import "dart:core" as core;

class B extends core::Object {
  synthetic constructor •() → void
    ;
  method f(core::int x, core::int y) → void
    ;
}
abstract class I extends core::Object {
  synthetic constructor •() → void
    ;
  abstract method f(covariant core::int x, core::Object y) → void;
}
class C extends self::B implements self::I {
  synthetic constructor •() → void
    ;
}
static method main() → void
  ;