public void AddProvider_WhenProviderIsNull_ThrowsArgumentNullException()
 {
     Assert.Throws <ArgumentNullException>(() =>
     {
         _factory.AddProvider <DummyLogProvider>(null);
     });
 }
        /// <summary>
        /// Method for adding the <see cref="ServiceProvider"/> to the <see cref="LogService"/>.
        /// </summary>
        public static void AddDebug(this ILogServiceFactory @this)
        {
            Argument.NotNull(
                @this,
                nameof(@this));

            var provider = new ServiceProvider();

            @this.AddProvider(provider);
        }