getCertExpires: Show the date and time when an X.509 certificate expires.
Description
Each X.509 has a range of certificate validity times. This method returns the X.509
'notAfter'
field formatted as a 'POSIXct'
date value.
Usage
getCertExpires(x, ...)# S4 method for CertificateManager
getCertExpires(x)
Arguments
x
a CertificateManager instance