namespace HelloWorld.Utilities.Console

{

    public class ConsoleHelper

    {

        public static void WriteMessage(string message)

        {

            if (!string.IsNullOrWhiteSpace(message))

            {

                System.Console.WriteLine($"Message: {message}");

            }

        }

    }

​

    class Program

    {

        static void Main(string[] args)

        {

            HelloWorld.Utilities.Console.ConsoleHelper.WriteMessage("Hello world!");

        }

    }

}