public DocumentReader()
{
_container.Register <ExcelReader>(DocumentType.Excel);
_container.Register <WordReader>(DocumentType.Word);
_container.Register <WordReader>(DocumentType.RTF);
_container.Register <PDFReader>(DocumentType.PDF);
_container.Register <PPTReader>(DocumentType.PPT);
_container.Register <TextReader>(DocumentType.TXT);
}
public static void Register <U>(this ReaderContainer container, DocumentType documentType) where U : IReader
{
container.Register(documentType, typeof(U));
}