The Dispose method. This method comes from the IDisposable

interface and it is used to free up any unmanaged resources used by an object

when its work is finished.

using System;

public sealed class Foo : IDisposable

{

    private readonly IDisposable _bar;

​

    public Foo()

    {

        _bar = new Bar();

    }

​

    public void Dispose() => _bar.Dispose();

}