':return: A list of option objects for this plugin.'

def get_options(self):

    ol = OptionList()
    d = 'Set    minimal    amount    of    days    before    expiration    of    the    certificate    for    alerting'
    h = 'If    the    certificate    will    expire    in    period    of    minExpireDays    w3af    will    show    an    alert    about    it,    which    is    useful    for    admins    to    remember    to    renew    the    certificate.'
    o = opt_factory('minExpireDays', self._min_expire_days, d, 'integer', help=h)
    ol.add(o)
    d = 'CA    PEM    file    path'
    o = opt_factory('caFileName', self._ca_file, d, INPUT_FILE)
    ol.add(o)
    return ol
