library;
import self as self;
import "dart:core" as core;
import "dart:async" as asy;

extension type MyList<T extends core::Object? = dynamic>(core::List<T%> it) implements core::List<T%> {
  abstract extension-type-member representation-field get it() → core::List<T%>;
  constructor • = self::MyList|constructor#;
  constructor tearoff • = self::MyList|constructor#_#new#tearOff;
}
extension type MyStream<T extends core::Object? = dynamic>(asy::Stream<T%> it) implements asy::Stream<T%> {
  abstract extension-type-member representation-field get it() → asy::Stream<T%>;
  constructor • = self::MyStream|constructor#;
  constructor tearoff • = self::MyStream|constructor#_#new#tearOff;
}
static extension-type-member method MyList|constructor#<T extends core::Object? = dynamic>(core::List<self::MyList|constructor#::T%> it) → self::MyList<self::MyList|constructor#::T%> /* = core::List<self::MyList|constructor#::T%> */ {
  lowered final self::MyList<self::MyList|constructor#::T%> /* = core::List<self::MyList|constructor#::T%> */ #this = it;
  return #this;
}
static extension-type-member method MyList|constructor#_#new#tearOff<T extends core::Object? = dynamic>(core::List<self::MyList|constructor#_#new#tearOff::T%> it) → self::MyList<self::MyList|constructor#_#new#tearOff::T%> /* = core::List<self::MyList|constructor#_#new#tearOff::T%> */
  return self::MyList|constructor#<self::MyList|constructor#_#new#tearOff::T%>(it);
static extension-type-member method MyStream|constructor#<T extends core::Object? = dynamic>(asy::Stream<self::MyStream|constructor#::T%> it) → self::MyStream<self::MyStream|constructor#::T%> /* = asy::Stream<self::MyStream|constructor#::T%> */ {
  lowered final self::MyStream<self::MyStream|constructor#::T%> /* = asy::Stream<self::MyStream|constructor#::T%> */ #this = it;
  return #this;
}
static extension-type-member method MyStream|constructor#_#new#tearOff<T extends core::Object? = dynamic>(asy::Stream<self::MyStream|constructor#_#new#tearOff::T%> it) → self::MyStream<self::MyStream|constructor#_#new#tearOff::T%> /* = asy::Stream<self::MyStream|constructor#_#new#tearOff::T%> */
  return self::MyStream|constructor#<self::MyStream|constructor#_#new#tearOff::T%>(it);
static method method(self::MyList<core::int> /* = core::List<core::int> */ list, self::MyStream<core::String> /* = asy::Stream<core::String> */ stream) → dynamic {
  () → core::Iterable<core::int> a = () → core::Iterable<core::int> sync* {
    yield* list;
  };
  () → asy::Stream<core::String> b = () → asy::Stream<core::String> async* {
    yield* stream;
  };
}