Aspose::Words::DigitalSignatures::DigitalSignatureUtil::Sign method. Signs source document using given CertificateHolder with digital signature and writes signed document To destination stream. Supported formats are: Doc, Dot, Docx, Dotx, Docm, Odt, Ott.Output will be written To the start of stream and stream size will be updated with content length in C++....Aspose::Words::DigitalSignatures::DigitalSignatureUtil::Sign...const System::SharedPtr<Aspose::Words::DigitalSignatures::CertificateHolder>&)...