Update Method
Renews the certificate.
Syntax
int Update();
Remarks
This method renews a certificate by updating its validity period and re-signing the updated version.
Note that this operation expects both Certificate and CACertificate properties to be set.
Error Handling
This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)