class_a.dart

library class_a;

import 'package:built_value/built_value.dart';
import 'package:built_value/serializer.dart';

part 'class_a.g.dart';

abstract class ClassA implements Built<ClassA, ClassABuilder> {
  int get value;
  ClassA._();

  factory ClassA([update(ClassABuilder b)]) = _$ClassA;

  static Serializer<ClassA> get serializer => _$classASerializer;
}

class_a_duplicate.dart

library class_a_duplicate;

import 'package:built_value/built_value.dart';
import 'package:built_value/serializer.dart';

part 'class_a_duplicate.g.dart';

abstract class ClassA implements Built<ClassA, ClassABuilder> {
  int get value;
  ClassA._();

  factory ClassA([update(ClassABuilder b)]) = _$ClassA;

  static Serializer<ClassA> get serializer => _$classASerializer;
}

serializers.dart

library serializers;

import 'package:built_value/serializer.dart';

import 'class_a.dart';
import 'class_a_duplicate.dart' as prefix0;

part 'serializers.g.dart';

@SerializersFor(const [
  ClassA,
  prefix0.ClassA,
])
final Serializers serializers = _$serializers;