NuGet.PhysicalFileSystem.AddFile C# (CSharp) Method

        public virtual void AddFile(string path, Stream stream)
        {
            EnsureDirectory(Path.GetDirectoryName(path));

            using (Stream outputStream = File.Create(GetFullPath(path)))
            {
                stream.CopyTo(outputStream);
            }

            WriteAddedFileAndDirectory(path);
        }