def certificate(cert, name, alt_host=None, port=443):
Adds/deletes an integer amount of seconds from a datetime specification
dataset/ETHPy150Open letsencrypt/letsencrypt/certbot/interfaces.py/IValidator.certificate--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/pysaml2-2.4.0/src/saml2/time_util.py/shift_time