// Copyright (c) Microsoft. All Rights Reserved. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
/// Lazily populated dictionary indicating whether a source file is a generated code file or not - we populate it lazily to avoid realizing all syntax trees in the compilation upfront.
/// Lazily populated dictionary indicating whether a source file has any hidden regions - we populate it lazily to avoid realizing all syntax trees in the compilation upfront.