NuGet.LocalPackageRepository.GetPackage C# (CSharp) Method

        private IPackage GetPackage(Func<string, IPackage> openPackage, string path)
        {
            PackageCacheEntry cacheEntry;
            DateTimeOffset lastModified = FileSystem.GetLastModified(path);
            // If we never cached this file or we did and it's current last modified time is newer
            // create a new entry
            if (!_packageCache.TryGetValue(path, out cacheEntry) ||
                (cacheEntry != null && lastModified > cacheEntry.LastModifiedTime))
            {
                // We need to do this so we capture the correct loop variable
                string packagePath = path;

                // Create the package
                IPackage package = openPackage(packagePath);


                // create a cache entry with the last modified time
                cacheEntry = new PackageCacheEntry(package, lastModified);

                if (_enableCaching)
                {
                    // Store the entry
                    _packageCache[packagePath] = cacheEntry;
                    _packagePathLookup[new PackageName(package.Id, package.Version)] = path;
                }
            }

            return cacheEntry.Package;
        }