library /*isNonNullableByDefault*/;
//
// Problems in library:
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:37:7: Error: The non-abstract class 'ConcreteSub' is missing implementations for these members:
//  - Interface1.extendedAbstractImplementedMethod
//  - Interface1.extendedAbstractImplementedMultipleMethod
//  - Interface2.extendedAbstractImplementedMultipleMethod
//  - Super.extendedAbstractImplementedMethod
//  - Super.extendedAbstractImplementedMultipleMethod
//  - Super.extendedAbstractMethod
// 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/extend_multiple_method.dart:22:8: Context: 'Interface1.extendedAbstractImplementedMethod' is defined here.
//   void extendedAbstractImplementedMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:26:8: Context: 'Interface1.extendedAbstractImplementedMultipleMethod' is defined here.
//   void extendedAbstractImplementedMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:32:8: Context: 'Interface2.extendedAbstractImplementedMultipleMethod' is defined here.
//   void extendedAbstractImplementedMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:12:8: Context: 'Super.extendedAbstractImplementedMethod' is defined here.
//   void extendedAbstractImplementedMethod();
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:16:8: Context: 'Super.extendedAbstractImplementedMultipleMethod' is defined here.
//   void extendedAbstractImplementedMultipleMethod();
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:8:8: Context: 'Super.extendedAbstractMethod' is defined here.
//   void extendedAbstractMethod();
//        ^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:39:7: Error: The non-abstract class 'ConcreteClass' is missing implementations for these members:
//  - Interface1.extendedAbstractImplementedMethod
//  - Interface1.extendedAbstractImplementedMultipleMethod
//  - Interface2.extendedAbstractImplementedMultipleMethod
//  - Super.extendedAbstractImplementedMethod
//  - Super.extendedAbstractImplementedMultipleMethod
//  - Super.extendedAbstractMethod
// 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 extends Super implements Interface1, Interface2 {}
//       ^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:22:8: Context: 'Interface1.extendedAbstractImplementedMethod' is defined here.
//   void extendedAbstractImplementedMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:26:8: Context: 'Interface1.extendedAbstractImplementedMultipleMethod' is defined here.
//   void extendedAbstractImplementedMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:32:8: Context: 'Interface2.extendedAbstractImplementedMultipleMethod' is defined here.
//   void extendedAbstractImplementedMultipleMethod() {}
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:12:8: Context: 'Super.extendedAbstractImplementedMethod' is defined here.
//   void extendedAbstractImplementedMethod();
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:16:8: Context: 'Super.extendedAbstractImplementedMultipleMethod' is defined here.
//   void extendedAbstractImplementedMultipleMethod();
//        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/extend_multiple_method.dart:8:8: Context: 'Super.extendedAbstractMethod' is defined here.
//   void extendedAbstractMethod();
//        ^^^^^^^^^^^^^^^^^^^^^^
//
import self as self;
import "dart:core" as core;

abstract class Super extends core::Object {
  synthetic constructor •() → self::Super
    ;
  method extendedConcreteMethod() → void
    ;
  abstract method extendedAbstractMethod() → void;
  method extendedConcreteImplementedMethod() → void
    ;
  abstract method extendedAbstractImplementedMethod() → void;
  method extendedConcreteImplementedMultipleMethod() → void
    ;
  abstract method extendedAbstractImplementedMultipleMethod() → void;
}
class Interface1 extends core::Object {
  synthetic constructor •() → self::Interface1
    ;
  method extendedConcreteImplementedMethod() → void
    ;
  method extendedAbstractImplementedMethod() → void
    ;
  method extendedConcreteImplementedMultipleMethod() → void
    ;
  method extendedAbstractImplementedMultipleMethod() → void
    ;
}
class Interface2 extends core::Object {
  synthetic constructor •() → self::Interface2
    ;
  method extendedConcreteImplementedMultipleMethod() → void
    ;
  method extendedAbstractImplementedMultipleMethod() → void
    ;
}
abstract class AbstractClass extends self::Super implements self::Interface1, self::Interface2 {
  synthetic constructor •() → self::AbstractClass
    ;
}
class ConcreteSub extends self::AbstractClass {
  synthetic constructor •() → self::ConcreteSub
    ;
}
class ConcreteClass extends self::Super implements self::Interface1, self::Interface2 {
  synthetic constructor •() → self::ConcreteClass
    ;
}
static method main() → dynamic
  ;