How to use the plexapi.utils.joinArgs function in PlexAPI

def test_utils_joinArgs():
    test_dict = {'genre': 'action', 'type': 1337}
    assert utils.joinArgs(test_dict) == '?genre=action&type=1337'

command (str): Command to be sent in for format '/'.
                proxy (bool): Set True to proxy this command through the PlexServer.
                **params (dict): Additional GET parameters to include with the command.

            Raises:
                :class:`~plexapi.exceptions.Unsupported`: When we detect the client
                    doesn't support this capability.
        """
        command = command.strip('/')
        controller = command.split('/')[0]
        if controller not in self.protocolCapabilities:
            log.debug('Client %s doesnt support %s controller.'
                      'What your trying might not work' % (self.title, controller))

        params['commandID'] = self._nextCommandId()
        key = '/player/%s%s' % (command, utils.joinArgs(params))
        headers = {'X-Plex-Target-Client-Identifier': self.machineIdentifier}
        proxy = self._proxyThroughServer if proxy is None else proxy
        if proxy:
            return self._server.query(key, headers=headers)
        return self.query(key, headers=headers)

""" Searching within a library section is much more powerful. It seems certain
            attributes on the media objects can be targeted to filter this search down
            a bit, but I havent found the documentation for it.

            Example: "studio=Comedy%20Central" or "year=1999" "title=Kung Fu" all work. Other items
            such as actor= seem to work, but require you already know the id of the actor.
            TLDR: This is untested but seems to work. Use library section search when you can.
        """
        args = {}
        if title:
            args['title'] = title
        if libtype:
            args['type'] = utils.searchType(libtype)
        for attr, value in kwargs.items():
            args[attr] = value
        key = '/library/all%s' % utils.joinArgs(args)
        return self.fetchItems(key)

def create(cls, server, title, items):
        """ Create a playlist. """
        if not isinstance(items, (list, tuple)):
            items = [items]
        ratingKeys = []
        for item in items:
            if item.listType != items[0].listType:  # pragma: no cover
                raise BadRequest('Can not mix media types when building a playlist')
            ratingKeys.append(str(item.ratingKey))
        ratingKeys = ','.join(ratingKeys)
        uuid = items[0].section().uuid
        key = '/playlists%s' % utils.joinArgs({
            'uri': 'library://%s/directory//library/metadata/%s' % (uuid, ratingKeys),
            'type': items[0].listType,
            'title': title,
            'smart': 0
        })
        data = server.query(key, method=server._session.post)[0]
        return cls(server, data, initpath=key)

category (str): Category to list choices for (genre, contentRating, etc).
                libtype (int): Library type of item filter.
                **kwargs (dict): Additional kwargs to narrow down the choices.

            Raises:
                :class:`plexapi.exceptions.BadRequest`: Cannot include kwarg equal to specified category.
        """
        # TODO: Should this be moved to base?
        if category in kwargs:
            raise BadRequest('Cannot include kwarg equal to specified category: %s' % category)
        args = {}
        for subcategory, value in kwargs.items():
            args[category] = self._cleanSearchFilter(subcategory, value)
        if libtype is not None:
            args['type'] = utils.searchType(libtype)
        key = '/library/sections/%s/%s%s' % (self.key, category, utils.joinArgs(args))
        return self.fetchItems(key, cls=FilterChoice)

category (str): Category to list choices for (genre, contentRating, etc).
                libtype (int): Library type of item filter.
                **kwargs (dict): Additional kwargs to narrow down the choices.

            Raises:
                :class:`~plexapi.exceptions.BadRequest`: Cannot include kwarg equal to specified category.
        """
        # TODO: Should this be moved to base?
        if category in kwargs:
            raise BadRequest('Cannot include kwarg equal to specified category: %s' % category)
        args = {}
        for subcategory, value in kwargs.items():
            args[category] = self._cleanSearchFilter(subcategory, value)
        if libtype is not None:
            args['type'] = utils.searchType(libtype)
        key = '/library/sections/%s/%s%s' % (self.key, category, utils.joinArgs(args))
        return self.fetchItems(key, cls=FilterChoice)

def addItems(self, items):
        """ Add items to a playlist. """
        if not isinstance(items, (list, tuple)):
            items = [items]
        ratingKeys = []
        for item in items:
            if item.listType != self.playlistType:
                raise BadRequest('Can not mix media types when building a playlist: %s and %s' %
                    (self.playlistType, item.listType))
            ratingKeys.append(str(item.ratingKey))
        uuid = items[0].section().uuid
        ratingKeys = ','.join(ratingKeys)
        key = '%s/items%s' % (self.key, utils.joinArgs({
            'uri': 'library://%s/directory//library/metadata/%s' % (uuid, ratingKeys)
        }))
        return self._server.query(key, method=self._server._session.put)

looking for the first  results, it would be wise to set the maxresults option to that
            amount so this functions doesn't iterate over all results on the server.

            Parameters:
                maxresults (int): Only return the specified number of results (optional).
                mindate (datetime): Min datetime to return results from. This really helps speed
                    up the result listing. For example: datetime.now() - timedelta(days=7)
        """
        results, subresults = [], '_init'
        args = {'sort': 'viewedAt:desc'}
        if mindate:
            args['viewedAt>'] = int(mindate.timestamp())
        args['X-Plex-Container-Start'] = 0
        args['X-Plex-Container-Size'] = min(X_PLEX_CONTAINER_SIZE, maxresults)
        while subresults and maxresults > len(results):
            key = '/status/sessions/history/all%s' % utils.joinArgs(args)
            subresults = self.fetchItems(key)
            results += subresults[:maxresults - len(results)]
            args['X-Plex-Container-Start'] += args['X-Plex-Container-Size']
        return results

if controller not in self.protocolCapabilities:
            log.debug('Client %s doesnt support %s controller.'
                      'What your trying might not work' % (self.title, controller))

        # Workaround for ptp. See https://github.com/pkkid/python-plexapi/issues/244
        t = time.time()
        if t - self._last_call >= 80 and self.product in ('ptp', 'Plex Media Player'):
            url = '/player/timeline/poll?wait=0&commandID=%s' % self._nextCommandId()
            if proxy:
                self._server.query(url, headers=headers)
            else:
                self.query(url, headers=headers)
            self._last_call = t

        params['commandID'] = self._nextCommandId()
        key = '/player/%s%s' % (command, utils.joinArgs(params))

        proxy = self._proxyThroughServer if proxy is None else proxy

        if proxy:
            return self._server.query(key, headers=headers)
        return self.query(key, headers=headers)

if sort is not None:
            args['sort'] = self._cleanSearchSort(sort)
        if libtype is not None:
            args['type'] = utils.searchType(libtype)

        myplex = self._server.myPlexAccount()
        sync_item = SyncItem(self._server, None)
        sync_item.title = title if title else self.title
        sync_item.rootTitle = self.title
        sync_item.contentType = self.CONTENT_TYPE
        sync_item.metadataType = self.METADATA_TYPE
        sync_item.machineIdentifier = self._server.machineIdentifier

        key = '/library/sections/%s/all' % self.key

        sync_item.location = 'library://%s/directory/%s' % (self.uuid, quote_plus(key + utils.joinArgs(args)))
        sync_item.policy = policy
        sync_item.mediaSettings = mediaSettings

        return myplex.sync(client=client, clientId=clientId, sync_item=sync_item)