/// <summary>
/// Calls the dispose methode on a IDisposable and sets the reference to null.
/// If the given reference is unable to be casted to IDisposable only the reference will be set to null.
/// </summary>
/// <typeparam name="T">Type of the reference to dispose and set.</typeparam>
/// <param name="obj">Reference to cast, dispose and set to null.</param>
public static void DisposeAndNull <T>(ref T obj)
where T : class
{
DisposeHelper.Dispose(obj);
obj = null;
}