anchor.diff:  - b
   ''': r'''
   line 2, column 1 of file.yaml: Could not create `Config`. Unsupported value for `builders`.
  -- a
  -^^^^''',
  +  ╷
  +2 │ ┌ - a
  +3 │ └ - b
  +  ╵''',
     r'''
   builders:
     sample:
       defaultEnumTest: bob
   ''': r'''
   line 3, column 22 of file.yaml: Could not create `Builder`. Unsupported value for `defaultEnumTest`. `bob` is not one of the supported values: none, dependents, all_packages, root_package
  -    defaultEnumTest: bob
  -                     ^^^''',
  +  ╷
  +3 │     defaultEnumTest: bob
  +  │                      ^^^
  +  ╵''',
     r'''
   builders:
     a:
       target: 42
     ''': r'''
   line 3, column 13 of file.yaml: Could not create `Builder`. Unsupported value for `target`.
  -    target: 42
  -            ^^''',
  +  ╷
  +3 │     target: 42
  +  │             ^^
  +  ╵''',
     r'''
   builders:
     a:
  
positive.code:           fail('parse should fail');
          } on CheckedFromJsonException catch (e) {
            final prettyOutput = _prettyPrintCheckedFromJsonException(e);
            printOnFailure(prettyOutput);
            expect(prettyOutput, entry.value);
          }
        });
  
negative.code: // BSD-style license that can be found in the LICENSE file.
  
  @TestOn('vm')
  import 'dart:io';
  
  import 'package:json_annotation/json_annotation.dart';
  