Companion libraries

Testably.Abstractions ships three optional NuGet packages that extend IFileSystem with capabilities the base class library (BCL) keeps in separate namespaces.

Package	Adds to IFileSystem
Testably.Abstractions.Compression	ZipFile and ZipArchive extension properties
Testably.Abstractions.AccessControl	GetAccessControl / SetAccessControl on files and directories
Testably.Abstractions.MemoryMappedFiles	MemoryMappedFile extension property

All packages target the IFileSystem interface, so they work transparently against either RealFileSystem or MockFileSystem.