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

abstract class TestMixin<R extends core::Object? = dynamic, T extends core::Object? = dynamic> extends core::Object /*isMixinDeclaration*/  {
  method test(generic-covariant-impl asy::Future<self::TestMixin::R%> fetch) → asy::Future<self::TestMixin::T%> async {
    final self::TestMixin::R% response = await fetch;
    self::TestMixin::T% result;
    if(response is{ForNonNullableByDefault} self::Response<dynamic>) {
      result = response{self::TestMixin::R% & self::Response<dynamic> /* '%' & '!' = '!' */}.{self::Response::data}{dynamic} as{TypeError,ForDynamic,ForNonNullableByDefault} self::TestMixin::T%;
    }
    else
      if(response is{ForNonNullableByDefault} self::PagingResponse<dynamic>) {
        result = response{self::TestMixin::R% & self::PagingResponse<dynamic> /* '%' & '!' = '!' */}.{self::PagingResponse::data}{self::PagingResponseData<dynamic>}.{self::PagingResponseData::data}{core::List<dynamic>} as{ForNonNullableByDefault} self::TestMixin::T%;
      }
      else
        if(response is{ForNonNullableByDefault} self::TestMixin::T%) {
          result = response{self::TestMixin::R% & self::TestMixin::T% /* '%' & '%' = '%' */};
        }
        else {
          throw core::Exception::•("Invalid response type");
        }
    return result;
  }
}
class PagingResponse<T extends core::Object? = dynamic> extends core::Object {
  final field self::PagingResponseData<self::PagingResponse::T%> data;
  constructor •(self::PagingResponseData<self::PagingResponse::T%> data) → self::PagingResponse<self::PagingResponse::T%>
    : self::PagingResponse::data = data, super core::Object::•()
    ;
}
class PagingResponseData<T extends core::Object? = dynamic> extends core::Object {
  final field core::List<self::PagingResponseData::T%> data;
  constructor •(core::List<self::PagingResponseData::T%> data) → self::PagingResponseData<self::PagingResponseData::T%>
    : self::PagingResponseData::data = data, super core::Object::•()
    ;
}
class Response<T extends core::Object? = dynamic> extends core::Object {
  final field self::Response::T% data;
  constructor •(self::Response::T% data) → self::Response<self::Response::T%>
    : self::Response::data = data, super core::Object::•()
    ;
}
abstract class _Class1&Object&TestMixin = core::Object with self::TestMixin<self::Response<core::String>, core::String> /*isAnonymousMixin,hasConstConstructor*/  {
  const synthetic constructor •() → self::_Class1&Object&TestMixin
    : super core::Object::•()
    ;
  mixin-super-stub method test(generic-covariant-impl asy::Future<self::Response<core::String>> fetch) → asy::Future<core::String>
    return super.{self::TestMixin::test}(fetch);
}
class Class1 extends self::_Class1&Object&TestMixin {
  synthetic constructor •() → self::Class1
    : super self::_Class1&Object&TestMixin::•()
    ;
  method _test() → dynamic {
    final self::Response<core::String> response = new self::Response::•<core::String>("test");
    this.{self::_Class1&Object&TestMixin::test}(asy::Future::value<self::Response<core::String>>(response)){(asy::Future<self::Response<core::String>>) → asy::Future<core::String>};
  }
}
abstract class _Class2&Object&TestMixin = core::Object with self::TestMixin<self::PagingResponse<core::String>, core::String> /*isAnonymousMixin,hasConstConstructor*/  {
  const synthetic constructor •() → self::_Class2&Object&TestMixin
    : super core::Object::•()
    ;
  mixin-super-stub method test(generic-covariant-impl asy::Future<self::PagingResponse<core::String>> fetch) → asy::Future<core::String>
    return super.{self::TestMixin::test}(fetch);
}
class Class2 extends self::_Class2&Object&TestMixin {
  synthetic constructor •() → self::Class2
    : super self::_Class2&Object&TestMixin::•()
    ;
  method _test() → dynamic {
    final self::PagingResponse<core::String> response = new self::PagingResponse::•<core::String>(new self::PagingResponseData::•<core::String>(<core::String>["test"]));
    this.{self::_Class2&Object&TestMixin::test}(asy::Future::value<self::PagingResponse<core::String>>(response)){(asy::Future<self::PagingResponse<core::String>>) → asy::Future<core::String>};
  }
}
static method main() → dynamic {}