Simple html to pdf example using TuesPechkin

gistfile1.txt

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TuesPechkin;

namespace SimpleHtmlToPdfConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            // create a new document with your desired configuration
            var document = new HtmlToPdfDocument
            {
                GlobalSettings =
                {
                    ProduceOutline = true,
                    DocumentTitle = "Pretty Websites",
                    //PaperSize = PaperKind.A4,
                    Margins =
                    {
                        All = 1.375,
                        Unit = Unit.Centimeters
                    }
                },
                Objects = {
					new ObjectSettings { HtmlText = "<h1>Pretty Websites</h1><p>This might take a bit to convert!</p>" },
					new ObjectSettings { PageUrl = "www.google.com" },
					new ObjectSettings { PageUrl = "www.microsoft.com" },
					new ObjectSettings { PageUrl = "www.github.com" }
				}
            };

            IPechkin converter = Factory.Create();

            // subscribe to events
            /* converter.Begin += OnBegin;
            converter.Error += OnError;
            converter.Warning += OnWarning;
            converter.PhaseChanged += OnPhase;
            converter.ProgressChanged += OnProgress;
            converter.Finished += OnFinished;*/

            // convert document
            byte[] result = converter.Convert(document);

            ByteArrayToFile(result, "C:/temp/exmple.pdf");
        }
        public static bool ByteArrayToFile(byte[] _ByteArray, string _FileName)
        {
            try
            {
                System.IO.FileStream _FileStream = new System.IO.FileStream(_FileName, System.IO.FileMode.Create, System.IO.FileAccess.Write);

                _FileStream.Write(_ByteArray, 0, _ByteArray.Length);

                _FileStream.Close();

                return true;
            }
            catch (Exception _Exception)
            {
                Console.WriteLine("Exception caught in process: {0}", _Exception.ToString());
            }

            return false;
        }
    }
}

Not recognize that :
" IPechkin converter = Factory.Create(); " What is it ?