<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def force_user_presence(self, user: User, presence: UserPresence):
 """ Forcibly set the ``user`` presence to ``presence``. This method is only provided to cover an edge case in our use of the Matrix protocol and should **not** generally be used. """

        self._userid_to_presence[user.user_id] = presence