public void MovFlags_Verify()
        {
            var settingWrong1 = new MovFlags(string.Empty);
            var settingWrong2 = new MovFlags("  ");
            var setting = new MovFlags(MovFlags.EnableFastStart);

            Assert.Throws<InvalidOperationException>(() => { var s = settingWrong1.GetAndValidateString(); });
            Assert.Throws<InvalidOperationException>(() => { var s = settingWrong2.GetAndValidateString(); });
            Assert.DoesNotThrow(() => { var s = setting.GetAndValidateString(); });
            Assert.Equal(setting.GetAndValidateString(), "-movflags +faststart");
        }