private static int SlidesCount(PresentationDocument document)
		{
			document.CheckForNull("presentation");

			int slidesCount = 0;

			PresentationPart presentationPart
				= document.PresentationPart;

			if (presentationPart != null)
			{
				slidesCount = presentationPart.SlideParts.Count();
			}

			return slidesCount;
		}
        private static int SlidesCount(PresentationDocument document)
        {
            document.CheckForNull("presentation");

            int slidesCount = 0;

            PresentationPart presentationPart
                = document.PresentationPart;

            if (presentationPart != null)
            {
                slidesCount = presentationPart.SlideParts.Count();
            }

            return(slidesCount);
        }