/// <summary>
/// Adds a route to the host's routing table.
/// </summary>
/// <param name="route">The route to add to the host's routing table.</param>
/// <param name="index">The row number to insert the route add or null to add the route
/// to the end of the routing table.</param>
/// <exception cref="ArgumentNullException">The route parameter is null.</exception>
public void AddRoute(Route route, int?index = null)
{
route.ThrowIfNull(nameof(route));
if (!index.HasValue)
{
routingTable.Add(route);
}
else
{
routingTable.Insert(index.Value, route);
}
}