private void TestHtml(string testFilePath)
        {
            byte[]       testFile  = File.ReadAllBytes(testFilePath);
            PdfConverter converter = new PdfConverter();

            byte[] pdf = converter.ConvertFile(testFile, Path.GetFileName(testFilePath), new ConversionOptions());
            Assert.IsNotNull(pdf);
            Assert.IsTrue(pdf.Length > 0);
        }
        public void TestNull()
        {
            PdfConverter converter = new PdfConverter();

            byte[] response = converter.ConvertFile(null, "nullfile.doc", new ConversionOptions());
        }