/// <summary>Decreases the reference count.</summary>
/// <exception cref="System.IO.IOException">it never throws IOException.</exception>
public virtual void Close()
{
volume.Unreference();
}
/// <summary>Decreases the reference count.</summary>
/// <exception cref="System.IO.IOException">it never throws IOException.</exception>
public virtual void Close()
{
volume.Unreference();
}