NuGet.Program.AddExtensionsToCatalog C# (CSharp) Метод

        private static void AddExtensionsToCatalog(AggregateCatalog catalog)
        {
            IEnumerable<string> directories = new[] { ExtensionsDirectoryRoot };

            var customExtensions = Environment.GetEnvironmentVariable(NuGetExtensionsKey);
            if (!String.IsNullOrEmpty(customExtensions))
            {
                // Add all directories from the environment variable if available.
                directories = directories.Concat(customExtensions.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries));
            }

            foreach (var directory in directories)
            {
                if (Directory.Exists(directory))
                {
                    var files = Directory.EnumerateFiles(directory, "*.dll", SearchOption.AllDirectories);
                    RegisterExtensions(catalog, files);
                }
            }
        }