ILoggerFactory with Null Object Pattern

ILoggerFactoryNullObject.cs

namespace ConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            new Example().Print("Hello World!");
        }
    }
    public class Example
    {
        readonly ILogger _logger;
        readonly ILoggerFactory _loggerFactory;
        public Example(ILoggerFactory loggerFactory = null)
        {
            _loggerFactory = loggerFactory ?? NullLoggerFactory.Instance;
            _logger = _loggerFactory.CreateLogger<Example>();
        }
        public void Print(string message)
        {
            _logger.LogTrace("Logged message: {message}", message);
            Console.WriteLine(message);
        }
    }
}