'Get the property of a nick in a room, such as its \'jid\' or \'affiliation\'
If not found, return None.'

def getJidProperty(self, room, nick, jidProperty):

    if ((room in self.rooms) and (nick in self.rooms[room]) and (jidProperty in self.rooms[room][nick])):
        return self.rooms[room][nick][jidProperty]
    else:
        return None
