chunk 2: remaining non-audio non-NewImport assets

Assets/GooglePlayPlugins/com.google.android.appbundle/Editor/Scripts/Internal/Registry.cs

@@ -0,0 +1,45 @@
+// Copyright 2019 Google LLC
+//
+// 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
+//
+//     https://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.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Google.Android.AppBundle.Editor.Internal
+{
+    /// <summary>
+    /// Provides methods to register a constructor and construct a list of instances.
+    /// </summary>
+    public class Registry<T>
+    {
+        private readonly List<Func<T>> _registeredConstructors = new List<Func<T>>();
+
+        /// <summary>
+        /// Register a constructor to be called whenever <see cref="ConstructInstances"/> is called. The result of the
+        /// registered constructor will be included in the result of <see cref="ConstructInstances"/>.
+        /// </summary>
+        public void RegisterConstructor(Func<T> constructor)
+        {
+            _registeredConstructors.Add(constructor);
+        }
+
+        /// <summary>
+        /// Calls all registered constructors and a list of instances.
+        /// </summary>
+        public IList<T> ConstructInstances()
+        {
+            return _registeredConstructors.Select(constructor => constructor.Invoke()).ToList();
+        }
+    }
+}