library /*isNonNullableByDefault*/;
//
// Problems in library:
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:9:7: Error: The implementation of 'optionalArgumentsMethod' in the non-abstract class 'Class' does not conform to its interface.
// class Class /* error */ extends LegacyClass implements SuperQ {
//       ^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:9:7: Context: The method 'Super.optionalArgumentsMethod' has fewer positional arguments than those of overridden method 'SuperExtra.optionalArgumentsMethod'.
//   int optionalArgumentsMethod(int i) => i;
//       ^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:13:7: Context: This is the overridden method ('optionalArgumentsMethod').
//   int optionalArgumentsMethod(int i, [int? j]) => i;
//       ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:34:7: Error: The implementation of 'optionalArgumentsMethod' in the non-abstract class 'ClassQ' does not conform to its interface.
// class ClassQ /* error */ extends LegacyClassQ implements Super {
//       ^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:20:8: Context: The method 'SuperQ.optionalArgumentsMethod' has fewer positional arguments than those of overridden method 'SuperExtra.optionalArgumentsMethod'.
//   int? optionalArgumentsMethod(int? i) => i;
//        ^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:13:7: Context: This is the overridden method ('optionalArgumentsMethod').
//   int optionalArgumentsMethod(int i, [int? j]) => i;
//       ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:59:7: Error: The implementation of 'optionalArgumentsMethod' in the non-abstract class 'ClassMixedIn' does not conform to its interface.
// class ClassMixedIn /* error */ extends LegacyMixedIn implements SuperQ {
//       ^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:9:7: Context: The method 'Object with Super.optionalArgumentsMethod' has fewer positional arguments than those of overridden method 'SuperExtra.optionalArgumentsMethod'.
//   int optionalArgumentsMethod(int i) => i;
//       ^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:13:7: Context: This is the overridden method ('optionalArgumentsMethod').
//   int optionalArgumentsMethod(int i, [int? j]) => i;
//       ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:59:7: Error: Class 'ClassMixedIn' inherits multiple members named 'nullabilityMethod' with incompatible signatures.
// Try adding a declaration of 'nullabilityMethod' to 'ClassMixedIn'.
// class ClassMixedIn /* error */ extends LegacyMixedIn implements SuperQ {
//       ^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:6:7: Context: This is one of the overridden members.
//   int nullabilityMethod(int i, {required int j}) => i;
//       ^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:17:8: Context: This is one of the overridden members.
//   int? nullabilityMethod(int? i, {int? j}) => i;
//        ^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:84:7: Error: The implementation of 'optionalArgumentsMethod' in the non-abstract class 'ClassMixedInQ' does not conform to its interface.
// class ClassMixedInQ /* error */ extends LegacyMixedInQ implements Super {
//       ^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:20:8: Context: The method 'Object with SuperQ.optionalArgumentsMethod' has fewer positional arguments than those of overridden method 'SuperExtra.optionalArgumentsMethod'.
//   int? optionalArgumentsMethod(int? i) => i;
//        ^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:13:7: Context: This is the overridden method ('optionalArgumentsMethod').
//   int optionalArgumentsMethod(int i, [int? j]) => i;
//       ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:84:7: Error: Class 'ClassMixedInQ' inherits multiple members named 'nullabilityMethod' with incompatible signatures.
// Try adding a declaration of 'nullabilityMethod' to 'ClassMixedInQ'.
// class ClassMixedInQ /* error */ extends LegacyMixedInQ implements Super {
//       ^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:17:8: Context: This is one of the overridden members.
//   int? nullabilityMethod(int? i, {int? j}) => i;
//        ^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in_lib1.dart:6:7: Context: This is one of the overridden members.
//   int nullabilityMethod(int i, {required int j}) => i;
//       ^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:21:34: Error: Too many positional arguments: 1 allowed, but 2 found.
// Try removing the extra positional arguments.
//     super.optionalArgumentsMethod(null, null); // error
//                                  ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:46:34: Error: Too many positional arguments: 1 allowed, but 2 found.
// Try removing the extra positional arguments.
//     super.optionalArgumentsMethod(null, null); // error
//                                  ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:52:25: Error: The value 'null' can't be assigned to a variable of type 'int' because 'int' is not nullable.
//     nullabilitySetter = null; // error
//                         ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:63:31: Error: Required named parameter 'j' must be provided.
//     var v1 = nullabilityMethod(null); // ok
//                               ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:71:34: Error: Too many positional arguments: 1 allowed, but 2 found.
// Try removing the extra positional arguments.
//     super.optionalArgumentsMethod(null, null); // error
//                                  ^
//
// pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:96:34: Error: Too many positional arguments: 1 allowed, but 2 found.
// Try removing the extra positional arguments.
//     super.optionalArgumentsMethod(null, null); // error
//                                  ^
//
import self as self;
import "in_out_in_lib2.dart" as in_;
import "in_out_in_lib1.dart" as in_2;
import "dart:core" as core;

import "org-dartlang-testcase:///in_out_in_lib1.dart";
import "org-dartlang-testcase:///in_out_in_lib2.dart";

class Class extends in_::LegacyClass implements in_2::SuperQ {
  synthetic constructor •() → self::Class
    : super in_::LegacyClass::•()
    ;
  method test() → dynamic {
    core::int i;
    core::int? v1 = this.{self::Class::nullabilityMethod}(null){(core::int?, {j: core::int?}) → core::int?};
    i = super.{in_2::Super::nullabilityMethod}(null);
    i = this.{in_::LegacyClass::optionalArgumentsMethod}(null, null){(core::int*, [core::int*]) →* core::int*};
    i = super.{in_2::Super::optionalArgumentsMethod}(null);
    invalid-expression "pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:21:34: Error: Too many positional arguments: 1 allowed, but 2 found.
Try removing the extra positional arguments.
    super.optionalArgumentsMethod(null, null); // error
                                 ^" in super.{in_2::Super::optionalArgumentsMethod}(null, null);
    core::int? v2 = this.{self::Class::nullabilityGetter}{core::int?};
    i = super.{in_2::Super::nullabilityGetter};
    this.{self::Class::nullabilitySetter} = null;
    super.{in_2::Super::nullabilitySetter} = null;
  }
  abstract member-signature method nullabilityMethod(core::int? i, {core::int? j = #C1}) → core::int?; -> in_2::Super::nullabilityMethod
  abstract member-signature get nullabilityGetter() → core::int?; -> in_2::Super::nullabilityGetter
  abstract member-signature get _identityHashCode() → core::int; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature get hashCode() → core::int; -> core::Object::hashCode
  abstract member-signature method toString() → core::String; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type; -> core::Object::runtimeType
  abstract member-signature set nullabilitySetter(core::int? value) → void; -> in_2::Super::nullabilitySetter
}
class ClassQ extends in_::LegacyClassQ implements in_2::Super {
  synthetic constructor •() → self::ClassQ
    : super in_::LegacyClassQ::•()
    ;
  method test() → dynamic {
    core::int i;
    this.{in_::LegacyClassQ::nullabilityMethod}(null){(core::int*, {j: core::int*}) →* core::int*};
    i = super.{in_2::SuperQ::nullabilityMethod}(null);
    i = this.{in_::LegacyClassQ::optionalArgumentsMethod}(null, null){(core::int*, [core::int*]) →* core::int*};
    i = super.{in_2::SuperQ::optionalArgumentsMethod}(null);
    invalid-expression "pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:46:34: Error: Too many positional arguments: 1 allowed, but 2 found.
Try removing the extra positional arguments.
    super.optionalArgumentsMethod(null, null); // error
                                 ^" in super.{in_2::SuperQ::optionalArgumentsMethod}(null, null);
    i = this.{self::ClassQ::nullabilityGetter}{core::int};
    i = super.{in_2::SuperQ::nullabilityGetter};
    this.{self::ClassQ::nullabilitySetter} = invalid-expression "pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:52:25: Error: The value 'null' can't be assigned to a variable of type 'int' because 'int' is not nullable.
    nullabilitySetter = null; // error
                        ^" in null as{TypeError,ForNonNullableByDefault} core::int;
    super.{in_2::SuperQ::nullabilitySetter} = null;
  }
  abstract member-signature get nullabilityGetter() → core::int; -> in_2::SuperQ::nullabilityGetter
  abstract member-signature get _identityHashCode() → core::int; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature get hashCode() → core::int; -> core::Object::hashCode
  abstract member-signature method toString() → core::String; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type; -> core::Object::runtimeType
  abstract member-signature set nullabilitySetter(core::int value) → void; -> in_2::SuperQ::nullabilitySetter
}
class ClassMixedIn extends in_::LegacyMixedIn implements in_2::SuperQ {
  synthetic constructor •() → self::ClassMixedIn
    : super in_::LegacyMixedIn::•()
    ;
  method test() → dynamic {
    core::int i;
    invalid-type v1 = invalid-expression "pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:63:31: Error: Required named parameter 'j' must be provided.
    var v1 = nullabilityMethod(null); // ok
                              ^" in this.{in_::_LegacyMixedIn&Object&Super::nullabilityMethod}{<inapplicable>}.(null){(invalid-type) → invalid-type};
    i = super.{in_::_LegacyMixedIn&Object&Super::nullabilityMethod}(null);
    i = this.{in_::LegacyMixedIn::optionalArgumentsMethod}(null, null){(core::int*, [core::int*]) →* core::int*};
    i = super.{in_::_LegacyMixedIn&Object&Super::optionalArgumentsMethod}(null);
    invalid-expression "pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:71:34: Error: Too many positional arguments: 1 allowed, but 2 found.
Try removing the extra positional arguments.
    super.optionalArgumentsMethod(null, null); // error
                                 ^" in super.{in_::_LegacyMixedIn&Object&Super::optionalArgumentsMethod}(null, null);
    core::int v2 = this.{in_::_LegacyMixedIn&Object&Super::nullabilityGetter}{core::int};
    i = super.{in_::_LegacyMixedIn&Object&Super::nullabilityGetter};
    this.{self::ClassMixedIn::nullabilitySetter} = null;
    super.{in_::_LegacyMixedIn&Object&Super::nullabilitySetter} = null;
  }
  abstract member-signature get _identityHashCode() → core::int; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature get hashCode() → core::int; -> core::Object::hashCode
  abstract member-signature method toString() → core::String; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type; -> core::Object::runtimeType
  abstract member-signature set nullabilitySetter(core::int? value) → void; -> in_2::SuperQ::nullabilitySetter
}
class ClassMixedInQ extends in_::LegacyMixedInQ implements in_2::Super {
  synthetic constructor •() → self::ClassMixedInQ
    : super in_::LegacyMixedInQ::•()
    ;
  method test() → dynamic {
    core::int i;
    this.{in_::_LegacyMixedInQ&Object&SuperQ::nullabilityMethod}(null){(core::int?, {j: core::int?}) →* core::int?};
    i = super.{in_::_LegacyMixedInQ&Object&SuperQ::nullabilityMethod}(null);
    i = this.{in_::LegacyMixedInQ::optionalArgumentsMethod}(null, null){(core::int*, [core::int*]) →* core::int*};
    i = super.{in_::_LegacyMixedInQ&Object&SuperQ::optionalArgumentsMethod}(null);
    invalid-expression "pkg/front_end/testcases/nnbd_mixed/hierarchy/in_dill_out_in/in_out_in.dart:96:34: Error: Too many positional arguments: 1 allowed, but 2 found.
Try removing the extra positional arguments.
    super.optionalArgumentsMethod(null, null); // error
                                 ^" in super.{in_::_LegacyMixedInQ&Object&SuperQ::optionalArgumentsMethod}(null, null);
    i = this.{self::ClassMixedInQ::nullabilityGetter}{core::int};
    i = super.{in_::_LegacyMixedInQ&Object&SuperQ::nullabilityGetter};
    this.{in_::_LegacyMixedInQ&Object&SuperQ::nullabilitySetter} = null;
    super.{in_::_LegacyMixedInQ&Object&SuperQ::nullabilitySetter} = null;
  }
  abstract member-signature get nullabilityGetter() → core::int; -> in_2::Super::nullabilityGetter
  abstract member-signature get _identityHashCode() → core::int; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature get hashCode() → core::int; -> core::Object::hashCode
  abstract member-signature method toString() → core::String; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type; -> core::Object::runtimeType
}
static method main() → dynamic {}

library /*isNonNullableByDefault*/;
import self as in_2;
import "dart:core" as core;

class Super extends core::Object {
  synthetic constructor •() → in_2::Super
    : super core::Object::•()
    ;
  method nullabilityMethod(core::int i, {required core::int j = #C1}) → core::int
    return i;
  get nullabilityGetter() → core::int
    return 0;
  set nullabilitySetter(core::int value) → void {}
  method optionalArgumentsMethod(core::int i) → core::int
    return i;
}
abstract class SuperExtra extends core::Object {
  synthetic constructor •() → in_2::SuperExtra
    : super core::Object::•()
    ;
  method optionalArgumentsMethod(core::int i, [core::int? j = #C1]) → core::int
    return i;
}
abstract class SuperQ extends core::Object {
  synthetic constructor •() → in_2::SuperQ
    : super core::Object::•()
    ;
  method nullabilityMethod(core::int? i, {core::int? j = #C1}) → core::int?
    return i;
  get nullabilityGetter() → core::int?
    return null;
  set nullabilitySetter(core::int? value) → void {}
  method optionalArgumentsMethod(core::int? i) → core::int?
    return i;
}

library;
import self as in_;
import "in_out_in_lib1.dart" as in_2;
import "dart:core" as core;

import "org-dartlang-testcase:///in_out_in_lib1.dart";

abstract class LegacyClass extends in_2::Super implements in_2::SuperExtra {
  synthetic constructor •() → in_::LegacyClass*
    : super in_2::Super::•()
    ;
  abstract member-signature method nullabilityMethod(core::int* i, {core::int* j = #C1}) → core::int*; -> in_2::Super::nullabilityMethod
  abstract member-signature get nullabilityGetter() → core::int*; -> in_2::Super::nullabilityGetter
  abstract member-signature method optionalArgumentsMethod(core::int* i, [core::int* j = #C1]) → core::int*; -> in_2::SuperExtra::optionalArgumentsMethod
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
  abstract member-signature set nullabilitySetter(core::int* value) → void; -> in_2::Super::nullabilitySetter
}
abstract class LegacyClassQ extends in_2::SuperQ implements in_2::SuperExtra {
  synthetic constructor •() → in_::LegacyClassQ*
    : super in_2::SuperQ::•()
    ;
  abstract member-signature method nullabilityMethod(core::int* i, {core::int* j = #C1}) → core::int*; -> in_2::SuperQ::nullabilityMethod
  abstract member-signature get nullabilityGetter() → core::int*; -> in_2::SuperQ::nullabilityGetter
  abstract member-signature method optionalArgumentsMethod(core::int* i, [core::int* j = #C1]) → core::int*; -> in_2::SuperExtra::optionalArgumentsMethod
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
  abstract member-signature set nullabilitySetter(core::int* value) → void; -> in_2::SuperQ::nullabilitySetter
}
abstract class _LegacyMixedIn&Object&Super extends core::Object implements in_2::Super /*isAnonymousMixin,isEliminatedMixin,hasConstConstructor*/  {
  const synthetic constructor •() → in_::_LegacyMixedIn&Object&Super*
    : super core::Object::•()
    ;
  method /*isNonNullableByDefault, from org-dartlang-testcase:///in_out_in_lib1.dart */ nullabilityMethod(core::int i, {required core::int j = #C1}) → core::int
    return i;
  get /*isNonNullableByDefault, from org-dartlang-testcase:///in_out_in_lib1.dart */ nullabilityGetter() → core::int
    return 0;
  method /*isNonNullableByDefault, from org-dartlang-testcase:///in_out_in_lib1.dart */ optionalArgumentsMethod(core::int i) → core::int
    return i;
  set /*isNonNullableByDefault, from org-dartlang-testcase:///in_out_in_lib1.dart */ nullabilitySetter(core::int value) → void {}
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
abstract class LegacyMixedIn extends in_::_LegacyMixedIn&Object&Super implements in_2::SuperExtra {
  synthetic constructor •() → in_::LegacyMixedIn*
    : super in_::_LegacyMixedIn&Object&Super::•()
    ;
  abstract member-signature method optionalArgumentsMethod(core::int* i, [core::int* j = #C1]) → core::int*; -> in_2::SuperExtra::optionalArgumentsMethod
}
abstract class _LegacyMixedInQ&Object&SuperQ extends core::Object implements in_2::SuperQ /*isAnonymousMixin,isEliminatedMixin,hasConstConstructor*/  {
  const synthetic constructor •() → in_::_LegacyMixedInQ&Object&SuperQ*
    : super core::Object::•()
    ;
  method /*isNonNullableByDefault, from org-dartlang-testcase:///in_out_in_lib1.dart */ nullabilityMethod(core::int? i, {core::int? j = #C1}) → core::int?
    return i;
  get /*isNonNullableByDefault, from org-dartlang-testcase:///in_out_in_lib1.dart */ nullabilityGetter() → core::int?
    return null;
  method /*isNonNullableByDefault, from org-dartlang-testcase:///in_out_in_lib1.dart */ optionalArgumentsMethod(core::int? i) → core::int?
    return i;
  set /*isNonNullableByDefault, from org-dartlang-testcase:///in_out_in_lib1.dart */ nullabilitySetter(core::int? value) → void {}
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
abstract class LegacyMixedInQ extends in_::_LegacyMixedInQ&Object&SuperQ implements in_2::SuperExtra {
  synthetic constructor •() → in_::LegacyMixedInQ*
    : super in_::_LegacyMixedInQ&Object&SuperQ::•()
    ;
  abstract member-signature method optionalArgumentsMethod(core::int* i, [core::int* j = #C1]) → core::int*; -> in_2::SuperExtra::optionalArgumentsMethod
}

constants  {
  #C1 = null
}