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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def notifications(self):
 """The notifications that are available for the given user. Notifications are events that need the user's attention-application for joining a group administered by the user, acceptance of a group membership application, and so on. A notification is initially marked as new. The user can mark it as read or delete the notification. """

        params = {"f": "json"}
        url = "%s/notifications" % self.root
        return Notifications(url=url,
                             securityHandler=self._securityHandler,
                             proxy_url=self._proxy_url,
                             proxy_port=self._proxy_port)