<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def multiput(self, objs, **params):
 """ Stores objects in parallel via threads. :param objs: the objects to store :type objs: list of `RiakObject <riak.riak_object.RiakObject>` :param params: additional request flags, e.g. w, dw, pw :type params: dict :rtype: list of boolean or :class:`RiakObjects <riak.riak_object.RiakObject>`, """

        if self._multiput_pool:
            params['pool'] = self._multiput_pool
        return riak.client.multi.multiput(self, objs, **params)