public override IndexInput OpenInput(string name, IOContext context)
{
EnsureOpen();
var path = new FileInfo(Path.Combine(Directory.FullName, name));
var raf = new FileStream(path.FullName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
return new SimpleFSIndexInput("SimpleFSIndexInput(path=\"" + path.FullName + "\")", raf, context);
}