||Holds the alert actions (shell, email and dialogBox)
for a particular http target.
||All the specific alerts inherit from this base Class.
||Data representing an alert dialog box.
||Data representing an alert email.
||Data representing a window of time during which HTTPPoll
will not poll a target.
||Data representing a shell command to run when an
HTTPPoll alert is triggered.
||Data representing an HTTP target (a URL to be monitored
and its associated alert data).