<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_registration_fields(xmlstream, timeout=60, ):
 """ A query is sent to the server to obtain the fields that need to be filled to register with the server. :param xmlstream: Specifies the stream connected to the server where the account will be created. :type xmlstream: :class:`aioxmpp.protocol.XMLStream` :param timeout: Maximum time in seconds to wait for an IQ response, or :data:`None` to disable the timeout. :type timeout: :class:`~numbers.Real` or :data:`None` :return: :attr:`list` """


    iq = aioxmpp.IQ(
        to=aioxmpp.JID.fromstr(xmlstream._to),
        type_=aioxmpp.IQType.GET,
        payload=xso.Query()
    )
    iq.autoset_id()

    reply = yield from aioxmpp.protocol.send_and_wait_for(xmlstream,
                                                          [iq],
                                                          [aioxmpp.IQ],
                                                          timeout=timeout)
    return reply.payload