anchor.diff:      for (var field in fieldsToConvert) {
         // Compute the declaration of the corresponding enum constant.
         if (constantsBuffer.isNotEmpty) {
  -        constantsBuffer.write(',\n$indent');
  +        constantsBuffer.write(',$eol$indent');
         }
         constantsBuffer.write(field.name);
         var invocation = field.instanceCreation;
  
positive.code:     // being converted.
      var members = classDeclaration.members;
      var indent = utils.getIndent(1);
      var constantsBuffer = StringBuffer();
      var fieldsToConvert = fields.fieldsToConvert;
      fieldsToConvert
  
negative.code: 
      // Insert the declarations of the enum constants.
      var semicolon = ';';
      var prefix = '$eol$indent';
      var suffix = '$semicolon$eol';
      builder.addSimpleInsertion(bodyOffset, '$prefix$constantsBuffer$suffix');
  
      // Delete any members that are no longer needed.
  