library /*isNonNullableByDefault*/;
//
// Problems in library:
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:21:7: Error: The non-abstract class 'ConcreteClass' is missing implementations for these members:
//  - ConcreteClass.declareAbstractImplementMultipleMethod
//  - Interface1.implementMultipleMethod
//  - Interface2.implementMultipleMethod
// Try to either
//  - provide an implementation,
//  - inherit an implementation from a superclass or mixin,
//  - mark the class as abstract, or
//  - provide a 'noSuchMethod' implementation.
//
// class ConcreteClass implements Interface1, Interface2 {
//       ^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:24:8: Context: 'ConcreteClass.declareAbstractImplementMultipleMethod' is defined here.
//   void declareAbstractImplementMultipleMethod();
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:6:8: Context: 'Interface1.implementMultipleMethod' is defined here.
//   void implementMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:14:8: Context: 'Interface2.implementMultipleMethod' is defined here.
//   void implementMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:33:7: Error: The non-abstract class 'ConcreteSub' is missing implementations for these members:
//  - AbstractClass.declareAbstractImplementMultipleMethod
//  - Interface1.declareAbstractImplementMultipleMethod
//  - Interface1.implementMultipleMethod
//  - Interface2.declareAbstractImplementMultipleMethod
//  - Interface2.implementMultipleMethod
// Try to either
//  - provide an implementation,
//  - inherit an implementation from a superclass or mixin,
//  - mark the class as abstract, or
//  - provide a 'noSuchMethod' implementation.
//
// class ConcreteSub extends AbstractClass {}
//       ^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:30:8: Context: 'AbstractClass.declareAbstractImplementMultipleMethod' is defined here.
//   void declareAbstractImplementMultipleMethod();
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:10:8: Context: 'Interface1.declareAbstractImplementMultipleMethod' is defined here.
//   void declareAbstractImplementMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:6:8: Context: 'Interface1.implementMultipleMethod' is defined here.
//   void implementMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:18:8: Context: 'Interface2.declareAbstractImplementMultipleMethod' is defined here.
//   void declareAbstractImplementMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/implement_multiple_method.dart:14:8: Context: 'Interface2.implementMultipleMethod' is defined here.
//   void implementMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^
//
import self as self;
import "dart:core" as core;

class Interface1 extends core::Object {
  synthetic constructor •() → self::Interface1
    : super core::Object::•()
    ;
  method implementMultipleMethod() → void {}
  method declareConcreteImplementMultipleMethod() → void {}
  method declareAbstractImplementMultipleMethod() → void {}
}
class Interface2 extends core::Object {
  synthetic constructor •() → self::Interface2
    : super core::Object::•()
    ;
  method implementMultipleMethod() → void {}
  method declareConcreteImplementMultipleMethod() → void {}
  method declareAbstractImplementMultipleMethod() → void {}
}
class ConcreteClass extends core::Object implements self::Interface1, self::Interface2 {
  synthetic constructor •() → self::ConcreteClass
    : super core::Object::•()
    ;
  method declareConcreteImplementMultipleMethod() → void {}
  abstract method declareAbstractImplementMultipleMethod() → void;
}
abstract class AbstractClass extends core::Object implements self::Interface1, self::Interface2 {
  synthetic constructor •() → self::AbstractClass
    : super core::Object::•()
    ;
  method declareConcreteImplementMultipleMethod() → void {}
  abstract method declareAbstractImplementMultipleMethod() → void;
}
class ConcreteSub extends self::AbstractClass {
  synthetic constructor •() → self::ConcreteSub
    : super self::AbstractClass::•()
    ;
}
static method main() → dynamic {}