refactored code

lib/src/module.dart

@@ -0,0 +1,53 @@
+///
+/// Copyright 2021 Sergey Penkovsky <sergey.penkovsky@gmail.com>
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///      http://www.apache.org/licenses/LICENSE-2.0
+/// Unless required by applicable law or agreed to in writing, software
+/// distributed under the License is distributed on an "AS IS" BASIS,
+/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+/// See the License for the specific language governing permissions and
+/// limitations under the License.
+///
+import 'dart:collection';
+
+import 'package:cherrypick/src/binding.dart';
+import 'package:cherrypick/src/scope.dart';
+
+/// RU: Класс Module является основой для пользовательских модулей.
+///  Этот класс нужен для инициализации [Scope].
+///
+/// RU: The Module class is the basis for custom modules.
+/// This class is needed to initialize [Scope].
+///
+abstract class Module {
+  final Set<Binding> _bindingSet = HashSet();
+
+  /// RU: Метод добавляет в коллекцию модуля [Binding] экземпляр.
+  ///
+  /// ENG: The method adds an instance to the collection of the [Binding] module.
+  ///
+  /// return [Binding<T>]
+  Binding<T> bind<T>() {
+    final binding = Binding<T>();
+    _bindingSet.add(binding);
+    return binding;
+  }
+
+  /// RU: Метод возвращает коллекцию [Binding] экземпляров.
+  ///
+  /// ENG: The method returns a collection of [Binding] instances.
+  ///
+  /// return [Set<Binding>]
+  Set<Binding> get bindingSet => _bindingSet;
+
+  /// RU: Абстрактный метод для инициализации пользовательских экземпляров.
+  /// В этом методе осуществляется конфигурация зависимостей.
+  ///
+  /// ENG: Abstract method for initializing custom instances.
+  /// This method configures dependencies.
+  ///
+  /// return [void]
+  void builder(Scope currentScope);
+}