Introducing `IdeOptions`.

pkg/analysis_server/lib/src/ide_options.dart

+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/// A set of options used to configure the behavior of IDE functionality.
+abstract class IdeOptions {
+  /// Whether to generate boilerplate for lists of Flutter Widget children.
+  /// See: https://github.com/flutter/flutter-intellij/issues/463
+  bool get generateFlutterWidgetChildrenBoilerPlate;
+}
+
+class IdeOptionsImpl implements IdeOptions {
+  /// Initialize a newly created set of options with default values.
+  IdeOptionsImpl();
+
+  @override
+  bool generateFlutterWidgetChildrenBoilerPlate = false;
+}