| library /*isNonNullableByDefault*/; | 
 | // | 
 | // Problems in library: | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:7:8: Error: 'methodAndField1' is already declared in this scope. | 
 | //   int? methodAndField1; | 
 | //        ^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:6:8: Context: Previous declaration of 'methodAndField1'. | 
 | //   int? methodAndField1() {} | 
 | //        ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:10:8: Error: 'methodAndField2' is already declared in this scope. | 
 | //   int? methodAndField2() {} | 
 | //        ^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:9:8: Context: Previous declaration of 'methodAndField2'. | 
 | //   int? methodAndField2; | 
 | //        ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:13:14: Error: 'methodAndFinalField1' is already declared in this scope. | 
 | //   final int? methodAndFinalField1 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:12:8: Context: Previous declaration of 'methodAndFinalField1'. | 
 | //   int? methodAndFinalField1() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:16:8: Error: 'methodAndFinalField2' is already declared in this scope. | 
 | //   int? methodAndFinalField2() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:15:14: Context: Previous declaration of 'methodAndFinalField2'. | 
 | //   final int? methodAndFinalField2 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:19:8: Error: 'methodAndFieldAndSetter1' is already declared in this scope. | 
 | //   int? methodAndFieldAndSetter1; | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:18:8: Context: Previous declaration of 'methodAndFieldAndSetter1'. | 
 | //   int? methodAndFieldAndSetter1() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:23:8: Error: 'methodAndFieldAndSetter2' is already declared in this scope. | 
 | //   int? methodAndFieldAndSetter2() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:22:8: Context: Previous declaration of 'methodAndFieldAndSetter2'. | 
 | //   int? methodAndFieldAndSetter2; | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:28:8: Error: 'methodAndFieldAndSetter3' is already declared in this scope. | 
 | //   int? methodAndFieldAndSetter3; | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:27:8: Context: Previous declaration of 'methodAndFieldAndSetter3'. | 
 | //   int? methodAndFieldAndSetter3() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:32:8: Error: 'methodAndFieldAndSetter4' is already declared in this scope. | 
 | //   int? methodAndFieldAndSetter4() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:31:8: Context: Previous declaration of 'methodAndFieldAndSetter4'. | 
 | //   int? methodAndFieldAndSetter4; | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:35:14: Error: 'methodAndFinalFieldAndSetter1' is already declared in this scope. | 
 | //   final int? methodAndFinalFieldAndSetter1 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:34:8: Context: Previous declaration of 'methodAndFinalFieldAndSetter1'. | 
 | //   int? methodAndFinalFieldAndSetter1() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:39:8: Error: 'methodAndFinalFieldAndSetter2' is already declared in this scope. | 
 | //   int? methodAndFinalFieldAndSetter2() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:38:14: Context: Previous declaration of 'methodAndFinalFieldAndSetter2'. | 
 | //   final int? methodAndFinalFieldAndSetter2 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:44:14: Error: 'methodAndFinalFieldAndSetter3' is already declared in this scope. | 
 | //   final int? methodAndFinalFieldAndSetter3 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:43:8: Context: Previous declaration of 'methodAndFinalFieldAndSetter3'. | 
 | //   int? methodAndFinalFieldAndSetter3() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:48:8: Error: 'methodAndFinalFieldAndSetter4' is already declared in this scope. | 
 | //   int? methodAndFinalFieldAndSetter4() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:47:14: Context: Previous declaration of 'methodAndFinalFieldAndSetter4'. | 
 | //   final int? methodAndFinalFieldAndSetter4 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:54:3: Error: The return type of the setter must be 'void' or absent. | 
 | // Try removing the return type, or define a method rather than a setter. | 
 | //   int? set methodAndSetter2() {} | 
 | //   ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:63:14: Error: 'fieldAndFinalFieldAndSetter1' is already declared in this scope. | 
 | //   final int? fieldAndFinalFieldAndSetter1 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:62:8: Context: Previous declaration of 'fieldAndFinalFieldAndSetter1'. | 
 | //   int? fieldAndFinalFieldAndSetter1; | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:67:8: Error: 'fieldAndFinalFieldAndSetter2' is already declared in this scope. | 
 | //   int? fieldAndFinalFieldAndSetter2; | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:66:14: Context: Previous declaration of 'fieldAndFinalFieldAndSetter2'. | 
 | //   final int? fieldAndFinalFieldAndSetter2 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:72:14: Error: 'fieldAndFinalFieldAndSetter3' is already declared in this scope. | 
 | //   final int? fieldAndFinalFieldAndSetter3 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:71:8: Context: Previous declaration of 'fieldAndFinalFieldAndSetter3'. | 
 | //   int? fieldAndFinalFieldAndSetter3; | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:76:8: Error: 'fieldAndFinalFieldAndSetter4' is already declared in this scope. | 
 | //   int? fieldAndFinalFieldAndSetter4; | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:75:14: Context: Previous declaration of 'fieldAndFinalFieldAndSetter4'. | 
 | //   final int? fieldAndFinalFieldAndSetter4 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:20:12: Error: Conflicts with the implicit setter of the field 'methodAndFieldAndSetter1'. | 
 | //   void set methodAndFieldAndSetter1(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:19:8: Error: Conflicts with setter 'methodAndFieldAndSetter1'. | 
 | //   int? methodAndFieldAndSetter1; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:24:12: Error: Conflicts with the implicit setter of the field 'methodAndFieldAndSetter2'. | 
 | //   void set methodAndFieldAndSetter2(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:22:8: Error: Conflicts with setter 'methodAndFieldAndSetter2'. | 
 | //   int? methodAndFieldAndSetter2; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:26:12: Error: Conflicts with the implicit setter of the field 'methodAndFieldAndSetter3'. | 
 | //   void set methodAndFieldAndSetter3(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:28:8: Error: Conflicts with setter 'methodAndFieldAndSetter3'. | 
 | //   int? methodAndFieldAndSetter3; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:30:12: Error: Conflicts with the implicit setter of the field 'methodAndFieldAndSetter4'. | 
 | //   void set methodAndFieldAndSetter4(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:31:8: Error: Conflicts with setter 'methodAndFieldAndSetter4'. | 
 | //   int? methodAndFieldAndSetter4; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:57:12: Error: Conflicts with the implicit setter of the field 'fieldAndSetter1'. | 
 | //   void set fieldAndSetter1(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:56:8: Error: Conflicts with setter 'fieldAndSetter1'. | 
 | //   int? fieldAndSetter1; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:60:12: Error: Conflicts with the implicit setter of the field 'fieldAndSetter2'. | 
 | //   void set fieldAndSetter2(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:59:8: Error: Conflicts with setter 'fieldAndSetter2'. | 
 | //   int? fieldAndSetter2; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:64:12: Error: Conflicts with the implicit setter of the field 'fieldAndFinalFieldAndSetter1'. | 
 | //   void set fieldAndFinalFieldAndSetter1(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:62:8: Error: Conflicts with setter 'fieldAndFinalFieldAndSetter1'. | 
 | //   int? fieldAndFinalFieldAndSetter1; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:68:12: Error: Conflicts with the implicit setter of the field 'fieldAndFinalFieldAndSetter2'. | 
 | //   void set fieldAndFinalFieldAndSetter2(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:67:8: Error: Conflicts with setter 'fieldAndFinalFieldAndSetter2'. | 
 | //   int? fieldAndFinalFieldAndSetter2; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:70:12: Error: Conflicts with the implicit setter of the field 'fieldAndFinalFieldAndSetter3'. | 
 | //   void set fieldAndFinalFieldAndSetter3(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:71:8: Error: Conflicts with setter 'fieldAndFinalFieldAndSetter3'. | 
 | //   int? fieldAndFinalFieldAndSetter3; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:74:12: Error: Conflicts with the implicit setter of the field 'fieldAndFinalFieldAndSetter4'. | 
 | //   void set fieldAndFinalFieldAndSetter4(int? value) {} | 
 | //            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:76:8: Error: Conflicts with setter 'fieldAndFinalFieldAndSetter4'. | 
 | //   int? fieldAndFinalFieldAndSetter4; | 
 | //        ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:40:12: Error: 'methodAndFinalFieldAndSetter2' is already declared in this scope. | 
 | //   void set methodAndFinalFieldAndSetter2(int? value) {} | 
 | //            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:39:8: Context: Previous declaration of 'methodAndFinalFieldAndSetter2'. | 
 | //   int? methodAndFinalFieldAndSetter2() {} | 
 | //        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:51:12: Error: 'methodAndSetter1' is already declared in this scope. | 
 | //   void set methodAndSetter1(int? value) {} | 
 | //            ^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:50:8: Context: Previous declaration of 'methodAndSetter1'. | 
 | //   int? methodAndSetter1() {} | 
 | //        ^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:54:12: Error: 'methodAndSetter2' is already declared in this scope. | 
 | //   int? set methodAndSetter2() {} | 
 | //            ^^^^^^^^^^^^^^^^ | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:53:8: Context: Previous declaration of 'methodAndSetter2'. | 
 | //   void methodAndSetter2(int? value) {} | 
 | //        ^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:54:28: Error: A setter should have exactly one formal parameter. | 
 | //   int? set methodAndSetter2() {} | 
 | //                            ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:80:5: Error: Can't use 'methodAndField1' because it is declared more than once. | 
 | //   c.methodAndField1 = c.methodAndField1; | 
 | //     ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:80:25: Error: Can't use 'methodAndField1' because it is declared more than once. | 
 | //   c.methodAndField1 = c.methodAndField1; | 
 | //                         ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:80:25: Error: The getter 'methodAndField1' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndField1'. | 
 | //   c.methodAndField1 = c.methodAndField1; | 
 | //                         ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:80:5: Error: The setter 'methodAndField1' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndField1'. | 
 | //   c.methodAndField1 = c.methodAndField1; | 
 | //     ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:81:5: Error: Can't use 'methodAndField2' because it is declared more than once. | 
 | //   c.methodAndField2 = c.methodAndField2; | 
 | //     ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:81:25: Error: Can't use 'methodAndField2' because it is declared more than once. | 
 | //   c.methodAndField2 = c.methodAndField2; | 
 | //                         ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:81:25: Error: The getter 'methodAndField2' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndField2'. | 
 | //   c.methodAndField2 = c.methodAndField2; | 
 | //                         ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:81:5: Error: The setter 'methodAndField2' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndField2'. | 
 | //   c.methodAndField2 = c.methodAndField2; | 
 | //     ^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:82:5: Error: Can't use 'methodAndFinalField1' because it is declared more than once. | 
 | //   c.methodAndFinalField1; | 
 | //     ^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:82:5: Error: The getter 'methodAndFinalField1' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalField1'. | 
 | //   c.methodAndFinalField1; | 
 | //     ^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:83:5: Error: Can't use 'methodAndFinalField2' because it is declared more than once. | 
 | //   c.methodAndFinalField2; | 
 | //     ^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:83:5: Error: The getter 'methodAndFinalField2' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalField2'. | 
 | //   c.methodAndFinalField2; | 
 | //     ^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:84:5: Error: Can't use 'methodAndFieldAndSetter1' because it is declared more than once. | 
 | //   c.methodAndFieldAndSetter1 = c.methodAndFieldAndSetter1; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:84:34: Error: Can't use 'methodAndFieldAndSetter1' because it is declared more than once. | 
 | //   c.methodAndFieldAndSetter1 = c.methodAndFieldAndSetter1; | 
 | //                                  ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:84:34: Error: The getter 'methodAndFieldAndSetter1' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFieldAndSetter1'. | 
 | //   c.methodAndFieldAndSetter1 = c.methodAndFieldAndSetter1; | 
 | //                                  ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:84:5: Error: The setter 'methodAndFieldAndSetter1' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndFieldAndSetter1'. | 
 | //   c.methodAndFieldAndSetter1 = c.methodAndFieldAndSetter1; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:85:5: Error: Can't use 'methodAndFieldAndSetter2' because it is declared more than once. | 
 | //   c.methodAndFieldAndSetter2 = c.methodAndFieldAndSetter2; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:85:34: Error: Can't use 'methodAndFieldAndSetter2' because it is declared more than once. | 
 | //   c.methodAndFieldAndSetter2 = c.methodAndFieldAndSetter2; | 
 | //                                  ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:85:34: Error: The getter 'methodAndFieldAndSetter2' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFieldAndSetter2'. | 
 | //   c.methodAndFieldAndSetter2 = c.methodAndFieldAndSetter2; | 
 | //                                  ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:85:5: Error: The setter 'methodAndFieldAndSetter2' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndFieldAndSetter2'. | 
 | //   c.methodAndFieldAndSetter2 = c.methodAndFieldAndSetter2; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:86:5: Error: Can't use 'methodAndFieldAndSetter3' because it is declared more than once. | 
 | //   c.methodAndFieldAndSetter3 = c.methodAndFieldAndSetter3; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:86:34: Error: Can't use 'methodAndFieldAndSetter3' because it is declared more than once. | 
 | //   c.methodAndFieldAndSetter3 = c.methodAndFieldAndSetter3; | 
 | //                                  ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:86:34: Error: The getter 'methodAndFieldAndSetter3' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFieldAndSetter3'. | 
 | //   c.methodAndFieldAndSetter3 = c.methodAndFieldAndSetter3; | 
 | //                                  ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:86:5: Error: The setter 'methodAndFieldAndSetter3' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndFieldAndSetter3'. | 
 | //   c.methodAndFieldAndSetter3 = c.methodAndFieldAndSetter3; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:87:5: Error: Can't use 'methodAndFieldAndSetter4' because it is declared more than once. | 
 | //   c.methodAndFieldAndSetter4 = c.methodAndFieldAndSetter4; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:87:34: Error: Can't use 'methodAndFieldAndSetter4' because it is declared more than once. | 
 | //   c.methodAndFieldAndSetter4 = c.methodAndFieldAndSetter4; | 
 | //                                  ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:87:34: Error: The getter 'methodAndFieldAndSetter4' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFieldAndSetter4'. | 
 | //   c.methodAndFieldAndSetter4 = c.methodAndFieldAndSetter4; | 
 | //                                  ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:87:5: Error: The setter 'methodAndFieldAndSetter4' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndFieldAndSetter4'. | 
 | //   c.methodAndFieldAndSetter4 = c.methodAndFieldAndSetter4; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:88:39: Error: Can't use 'methodAndFinalFieldAndSetter1' because it is declared more than once. | 
 | //   c.methodAndFinalFieldAndSetter1 = c.methodAndFinalFieldAndSetter1; | 
 | //                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:88:39: Error: The getter 'methodAndFinalFieldAndSetter1' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalFieldAndSetter1'. | 
 | //   c.methodAndFinalFieldAndSetter1 = c.methodAndFinalFieldAndSetter1; | 
 | //                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:89:39: Error: Can't use 'methodAndFinalFieldAndSetter2' because it is declared more than once. | 
 | //   c.methodAndFinalFieldAndSetter2 = c.methodAndFinalFieldAndSetter2; | 
 | //                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:89:39: Error: The getter 'methodAndFinalFieldAndSetter2' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalFieldAndSetter2'. | 
 | //   c.methodAndFinalFieldAndSetter2 = c.methodAndFinalFieldAndSetter2; | 
 | //                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:90:39: Error: Can't use 'methodAndFinalFieldAndSetter3' because it is declared more than once. | 
 | //   c.methodAndFinalFieldAndSetter3 = c.methodAndFinalFieldAndSetter3; | 
 | //                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:90:39: Error: The getter 'methodAndFinalFieldAndSetter3' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalFieldAndSetter3'. | 
 | //   c.methodAndFinalFieldAndSetter3 = c.methodAndFinalFieldAndSetter3; | 
 | //                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:91:39: Error: Can't use 'methodAndFinalFieldAndSetter4' because it is declared more than once. | 
 | //   c.methodAndFinalFieldAndSetter4 = c.methodAndFinalFieldAndSetter4; | 
 | //                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:91:39: Error: The getter 'methodAndFinalFieldAndSetter4' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalFieldAndSetter4'. | 
 | //   c.methodAndFinalFieldAndSetter4 = c.methodAndFinalFieldAndSetter4; | 
 | //                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:92:26: Error: A value of type 'int? Function()' can't be assigned to a variable of type 'int?'. | 
 | //   c.methodAndSetter1 = c.methodAndSetter1; | 
 | //                          ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:96:5: Error: Can't use 'fieldAndFinalFieldAndSetter1' because it is declared more than once. | 
 | //   c.fieldAndFinalFieldAndSetter1 = c.fieldAndFinalFieldAndSetter1; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:96:38: Error: Can't use 'fieldAndFinalFieldAndSetter1' because it is declared more than once. | 
 | //   c.fieldAndFinalFieldAndSetter1 = c.fieldAndFinalFieldAndSetter1; | 
 | //                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:96:38: Error: The getter 'fieldAndFinalFieldAndSetter1' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'fieldAndFinalFieldAndSetter1'. | 
 | //   c.fieldAndFinalFieldAndSetter1 = c.fieldAndFinalFieldAndSetter1; | 
 | //                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:96:5: Error: The setter 'fieldAndFinalFieldAndSetter1' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'fieldAndFinalFieldAndSetter1'. | 
 | //   c.fieldAndFinalFieldAndSetter1 = c.fieldAndFinalFieldAndSetter1; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:97:5: Error: Can't use 'fieldAndFinalFieldAndSetter2' because it is declared more than once. | 
 | //   c.fieldAndFinalFieldAndSetter2 = c.fieldAndFinalFieldAndSetter2; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:97:38: Error: Can't use 'fieldAndFinalFieldAndSetter2' because it is declared more than once. | 
 | //   c.fieldAndFinalFieldAndSetter2 = c.fieldAndFinalFieldAndSetter2; | 
 | //                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:97:38: Error: The getter 'fieldAndFinalFieldAndSetter2' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'fieldAndFinalFieldAndSetter2'. | 
 | //   c.fieldAndFinalFieldAndSetter2 = c.fieldAndFinalFieldAndSetter2; | 
 | //                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:97:5: Error: The setter 'fieldAndFinalFieldAndSetter2' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'fieldAndFinalFieldAndSetter2'. | 
 | //   c.fieldAndFinalFieldAndSetter2 = c.fieldAndFinalFieldAndSetter2; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:98:5: Error: Can't use 'fieldAndFinalFieldAndSetter3' because it is declared more than once. | 
 | //   c.fieldAndFinalFieldAndSetter3 = c.fieldAndFinalFieldAndSetter3; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:98:38: Error: Can't use 'fieldAndFinalFieldAndSetter3' because it is declared more than once. | 
 | //   c.fieldAndFinalFieldAndSetter3 = c.fieldAndFinalFieldAndSetter3; | 
 | //                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:98:38: Error: The getter 'fieldAndFinalFieldAndSetter3' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'fieldAndFinalFieldAndSetter3'. | 
 | //   c.fieldAndFinalFieldAndSetter3 = c.fieldAndFinalFieldAndSetter3; | 
 | //                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:98:5: Error: The setter 'fieldAndFinalFieldAndSetter3' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'fieldAndFinalFieldAndSetter3'. | 
 | //   c.fieldAndFinalFieldAndSetter3 = c.fieldAndFinalFieldAndSetter3; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:99:5: Error: Can't use 'fieldAndFinalFieldAndSetter4' because it is declared more than once. | 
 | //   c.fieldAndFinalFieldAndSetter4 = c.fieldAndFinalFieldAndSetter4; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:99:38: Error: Can't use 'fieldAndFinalFieldAndSetter4' because it is declared more than once. | 
 | //   c.fieldAndFinalFieldAndSetter4 = c.fieldAndFinalFieldAndSetter4; | 
 | //                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:99:38: Error: The getter 'fieldAndFinalFieldAndSetter4' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing getter, or defining a getter or field named 'fieldAndFinalFieldAndSetter4'. | 
 | //   c.fieldAndFinalFieldAndSetter4 = c.fieldAndFinalFieldAndSetter4; | 
 | //                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:99:5: Error: The setter 'fieldAndFinalFieldAndSetter4' isn't defined for the class 'Class'. | 
 | //  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | // Try correcting the name to the name of an existing setter, or defining a setter or field named 'fieldAndFinalFieldAndSetter4'. | 
 | //   c.fieldAndFinalFieldAndSetter4 = c.fieldAndFinalFieldAndSetter4; | 
 | //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:66:14: Error: Final field 'fieldAndFinalFieldAndSetter2' is not initialized. | 
 | // Try to initialize the field in the declaration or in every constructor. | 
 | //   final int? fieldAndFinalFieldAndSetter2 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/instance_duplicates.dart:75:14: Error: Final field 'fieldAndFinalFieldAndSetter4' is not initialized. | 
 | // Try to initialize the field in the declaration or in every constructor. | 
 | //   final int? fieldAndFinalFieldAndSetter4 = 0; | 
 | //              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 | // | 
 | import self as self; | 
 | import "dart:core" as core; | 
 |  | 
 | class Class extends core::Object { | 
 |   field core::int? methodAndField2 = null; | 
 |   final field core::int? methodAndFinalField2 = null; | 
 |   field core::int? methodAndFieldAndSetter2 = null; | 
 |   field core::int? methodAndFieldAndSetter4 = null; | 
 |   final field core::int? methodAndFinalFieldAndSetter2 = null; | 
 |   final field core::int? methodAndFinalFieldAndSetter4 = null; | 
 |   field core::int? fieldAndSetter1 = null; | 
 |   field core::int? fieldAndSetter2 = null; | 
 |   field core::int? fieldAndFinalFieldAndSetter1 = null; | 
 |   final field core::int? fieldAndFinalFieldAndSetter2 = null; | 
 |   field core::int? fieldAndFinalFieldAndSetter3 = null; | 
 |   final field core::int? fieldAndFinalFieldAndSetter4 = null; | 
 |   synthetic constructor •() → self::Class | 
 |     : super core::Object::•() | 
 |     ; | 
 |   method methodAndField1() → core::int? {} | 
 |   method methodAndFinalField1() → core::int? {} | 
 |   method methodAndFieldAndSetter1() → core::int? {} | 
 |   method methodAndFieldAndSetter3() → core::int? {} | 
 |   method methodAndFinalFieldAndSetter1() → core::int? {} | 
 |   set methodAndFinalFieldAndSetter1(core::int? value) → void {} | 
 |   set methodAndFinalFieldAndSetter2(core::int? value) → void {} | 
 |   set methodAndFinalFieldAndSetter3(core::int? value) → void {} | 
 |   method methodAndFinalFieldAndSetter3() → core::int? {} | 
 |   set methodAndFinalFieldAndSetter4(core::int? value) → void {} | 
 |   method methodAndSetter1() → core::int? {} | 
 |   set methodAndSetter1(core::int? value) → void {} | 
 |   method methodAndSetter2(core::int? value) → void {} | 
 |   set methodAndSetter2(dynamic #synthetic) → void { | 
 |     invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:54:28: Error: A setter should have exactly one formal parameter. | 
 |   int? set methodAndSetter2() {} | 
 |                            ^"; | 
 |     {} | 
 |   } | 
 | } | 
 | static method test(self::Class c) → dynamic { | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:80:5: Error: The setter 'methodAndField1' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndField1'. | 
 |   c.methodAndField1 = c.methodAndField1; | 
 |     ^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:81:5: Error: The setter 'methodAndField2' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndField2'. | 
 |   c.methodAndField2 = c.methodAndField2; | 
 |     ^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:82:5: Error: The getter 'methodAndFinalField1' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalField1'. | 
 |   c.methodAndFinalField1; | 
 |     ^^^^^^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:83:5: Error: The getter 'methodAndFinalField2' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalField2'. | 
 |   c.methodAndFinalField2; | 
 |     ^^^^^^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:84:5: Error: The setter 'methodAndFieldAndSetter1' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndFieldAndSetter1'. | 
 |   c.methodAndFieldAndSetter1 = c.methodAndFieldAndSetter1; | 
 |     ^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:85:5: Error: The setter 'methodAndFieldAndSetter2' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndFieldAndSetter2'. | 
 |   c.methodAndFieldAndSetter2 = c.methodAndFieldAndSetter2; | 
 |     ^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:86:5: Error: The setter 'methodAndFieldAndSetter3' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndFieldAndSetter3'. | 
 |   c.methodAndFieldAndSetter3 = c.methodAndFieldAndSetter3; | 
 |     ^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:87:5: Error: The setter 'methodAndFieldAndSetter4' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'methodAndFieldAndSetter4'. | 
 |   c.methodAndFieldAndSetter4 = c.methodAndFieldAndSetter4; | 
 |     ^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   c.{self::Class::methodAndFinalFieldAndSetter1} = invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:88:39: Error: The getter 'methodAndFinalFieldAndSetter1' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalFieldAndSetter1'. | 
 |   c.methodAndFinalFieldAndSetter1 = c.methodAndFinalFieldAndSetter1; | 
 |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   c.{self::Class::methodAndFinalFieldAndSetter2} = invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:89:39: Error: The getter 'methodAndFinalFieldAndSetter2' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalFieldAndSetter2'. | 
 |   c.methodAndFinalFieldAndSetter2 = c.methodAndFinalFieldAndSetter2; | 
 |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   c.{self::Class::methodAndFinalFieldAndSetter3} = invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:90:39: Error: The getter 'methodAndFinalFieldAndSetter3' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalFieldAndSetter3'. | 
 |   c.methodAndFinalFieldAndSetter3 = c.methodAndFinalFieldAndSetter3; | 
 |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   c.{self::Class::methodAndFinalFieldAndSetter4} = invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:91:39: Error: The getter 'methodAndFinalFieldAndSetter4' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing getter, or defining a getter or field named 'methodAndFinalFieldAndSetter4'. | 
 |   c.methodAndFinalFieldAndSetter4 = c.methodAndFinalFieldAndSetter4; | 
 |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   c.{self::Class::methodAndSetter1} = let final Never #t1 = invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:92:26: Error: A value of type 'int? Function()' can't be assigned to a variable of type 'int?'. | 
 |   c.methodAndSetter1 = c.methodAndSetter1; | 
 |                          ^" in c.{self::Class::methodAndSetter1}{() → core::int?} as{TypeError,ForNonNullableByDefault} core::int?; | 
 |   c.{self::Class::methodAndSetter2} = c.{self::Class::methodAndSetter2}{(core::int?) → void}; | 
 |   c.{self::Class::fieldAndSetter1} = c.{self::Class::fieldAndSetter1}{core::int?}; | 
 |   c.{self::Class::fieldAndSetter2} = c.{self::Class::fieldAndSetter2}{core::int?}; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:96:5: Error: The setter 'fieldAndFinalFieldAndSetter1' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'fieldAndFinalFieldAndSetter1'. | 
 |   c.fieldAndFinalFieldAndSetter1 = c.fieldAndFinalFieldAndSetter1; | 
 |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:97:5: Error: The setter 'fieldAndFinalFieldAndSetter2' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'fieldAndFinalFieldAndSetter2'. | 
 |   c.fieldAndFinalFieldAndSetter2 = c.fieldAndFinalFieldAndSetter2; | 
 |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:98:5: Error: The setter 'fieldAndFinalFieldAndSetter3' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'fieldAndFinalFieldAndSetter3'. | 
 |   c.fieldAndFinalFieldAndSetter3 = c.fieldAndFinalFieldAndSetter3; | 
 |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 |   invalid-expression "pkg/front_end/testcases/nnbd/instance_duplicates.dart:99:5: Error: The setter 'fieldAndFinalFieldAndSetter4' isn't defined for the class 'Class'. | 
 |  - 'Class' is from 'pkg/front_end/testcases/nnbd/instance_duplicates.dart'. | 
 | Try correcting the name to the name of an existing setter, or defining a setter or field named 'fieldAndFinalFieldAndSetter4'. | 
 |   c.fieldAndFinalFieldAndSetter4 = c.fieldAndFinalFieldAndSetter4; | 
 |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^"; | 
 | } | 
 | static method main() → dynamic {} |