/// <summary>
        /// The main.
        /// </summary>
        private static void Main()
        {
            Console.WriteLine(FileUtils.GetFileExtension("example"));
            Console.WriteLine(FileUtils.GetFileExtension("example.pdf"));
            Console.WriteLine(FileUtils.GetFileExtension("example.new.pdf"));

            Console.WriteLine(FileUtils.GetFileNameWithoutExtension("example"));
            Console.WriteLine(FileUtils.GetFileNameWithoutExtension("example.pdf"));
            Console.WriteLine(FileUtils.GetFileNameWithoutExtension("example.new.pdf"));

            Console.WriteLine("Distance in the 2D space = {0:f2}", MathUtils.CalcDistance2D(1, -2, 3, 4));
            Console.WriteLine("Distance in the 3D space = {0:f2}", MathUtils.CalcDistance3D(5, 2, -1, 3, -6, 4));

            double width = 3, height = 4, depth = 5;

            Console.WriteLine("Volume = {0:f2}", MathUtils.CalcVolume(width, height, depth));
            Console.WriteLine("Diagonal XYZ = {0:f2}", MathUtils.CalcDiagonal3D(width, height, depth));
            Console.WriteLine("Diagonal XY = {0:f2}", MathUtils.CalcDiagonal2D(width, height));
            Console.WriteLine("Diagonal XZ = {0:f2}", MathUtils.CalcDiagonal2D(width, depth));
            Console.WriteLine("Diagonal YZ = {0:f2}", MathUtils.CalcDiagonal2D(height, depth));
        }