associate parameters (key/value pairs) with the Action class
This is useful for letting mechanisms convey information which may be
useful in making a decision whether an action is OK. For example,
NetworkManager could use this to provide the phone-number parameter
with a hypothetical "nm-dialup" action. Then a site or vendor can
provide insert
mandatory polkit-run-program.so program="/usr/lib/check-dialup-number.sh" privilege="nm-dialup"
into /etc/PolicyKit/PolicyKit.conf and have said program check
$POLKIT_ACTION_PARAM_PHONE_NUMBER
in that program.