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

abstract class A extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
  abstract method f(core::int x, core::int y) → core::int;
  abstract method g(core::int x, [core::int y = null]) → core::int;
  abstract method h(core::int x, {core::int y = null}) → core::int;
}
abstract class B extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
  abstract method f(core::int x) → core::int;
  abstract method g(core::int x) → core::int;
  abstract method h(core::int x) → core::int;
}
abstract class C extends core::Object implements self::A, self::B {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
  abstract method f(dynamic x, dynamic y) → dynamic;
  abstract method g(dynamic x, [dynamic y = null]) → dynamic;
  abstract method h(dynamic x, {dynamic y = null}) → dynamic;
}
static method main() → dynamic {}