First file migrated and tested in CocoaPods

Author: paulb777

FirebaseRemoteConfig.podspec

@@ -41,6 +41,7 @@ app update.
     'FirebaseCore/Extension/*.h',
     'FirebaseInstallations/Source/Library/Private/*.h',
     'FirebaseRemoteConfig/Swift/**/*.swift',
+    'FirebaseRemoteConfig/SwiftNew/**/*.swift',
   ]
   s.public_header_files = base_dir + 'Public/FirebaseRemoteConfig/*.h'
   s.resource_bundles = {

FirebaseRemoteConfig/Sources/FIRRemoteConfigUpdate.m

@@ -0,0 +1,29 @@
+// Copyright 2024 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
+//
+//      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 Foundation
+
+@objc(FIRRemoteConfigUpdate)
+class RemoteConfigUpdate: NSObject {
+
+  private let _updatedKeys: Set<String>
+
+  @objc init(updatedKeys: Set<String>) {
+    self._updatedKeys = updatedKeys
+  }
+
+  @objc var updatedKeys: Set<String> {
+    return _updatedKeys
+  }
+}