How to use the txaio.gather function in txaio

results = []
    calls = []

    def foo():
        def codependant(*args, **kw):
            calls.append((args, kw))
            return 42
        return txaio.as_future(codependant)

    def method(*args, **kw):
        calls.append((args, kw))
        return "OHAI"
    f0 = txaio.as_future(method, 1, 2, 3, key='word')
    f1 = txaio.as_future(foo)

    f2 = txaio.gather([f0, f1])

    def done(arg):
        results.append(arg)

    def error(fail):
        errors.append(fail)
        # fail.printTraceback()
    txaio.add_callbacks(f2, done, error)

    for f in [f0, f1, f2]:
        _await(f)

    assert len(results) == 1
    assert len(errors) == 0
    assert results[0] == ['OHAI', 42] or results[0] == [42, 'OHAI']
    assert len(calls) == 2

d = txaio.as_future(comp.start, reactor)
        txaio.add_callbacks(
            d,
            partial(component_success, comp),
            partial(component_failure, comp),
        )
        return d

    # note that these are started in parallel -- maybe we want to add
    # a "connected" signal to components so we could start them in the
    # order they're given to run() as "a" solution to dependencies.
    dl = []
    for comp in components:
        d = component_start(comp)
        dl.append(d)
    done_d = txaio.gather(dl, consume_exceptions=False)

    def all_done(arg):
        log.debug("All components ended; stopping reactor")
        if isinstance(arg, Failure):
            log.error("Something went wrong: {log_failure}", failure=arg)
        try:
            reactor.stop()
        except ReactorNotRunning:
            pass
    txaio.add_callbacks(done_d, all_done, all_done)
    return done_d

for k in inspect.getmembers(handler.__class__, is_method_or_function):
                proc = k[1]
                if "_wampuris" in proc.__dict__:
                    for pat in proc.__dict__["_wampuris"]:
                        if pat.is_handler():
                            _uri = pat.uri()
                            subopts = pat.options or options
                            if subopts is None:
                                if pat.uri_type == uri.Pattern.URI_TYPE_WILDCARD:
                                    subopts = types.SubscribeOptions(match=u"wildcard")
                                else:
                                    subopts = types.SubscribeOptions(match=u"exact")
                            on_replies.append(_subscribe(handler, proc, _uri, subopts))

            # XXX needs coverage
            return txaio.gather(on_replies, consume_exceptions=True)

receiver)

                                if receivers:
                                    # still more to do ..
                                    return txaio.call_later(0, _notify_some, receivers)
                                else:
                                    # all done! resolve all_d, which represents all receivers
                                    # to a single subscription matching the event
                                    txaio.resolve(all_d, None)

                            _notify_some([
                                recv for recv in receivers
                                if (me_also or recv != session) and recv != self._event_store
                            ])

                    return txaio.gather(all_dl)

else:

            # register all methods on an object decorated with "wamp.register"
            on_replies = []
            for k in inspect.getmembers(endpoint.__class__, is_method_or_function):
                proc = k[1]
                if "_wampuris" in proc.__dict__:
                    for pat in proc.__dict__["_wampuris"]:
                        if pat.is_endpoint():
                            _uri = pat.uri()
                            regopts = pat.options or options
                            on_replies.append(_register(endpoint, proc, _uri, regopts))

            # XXX needs coverage
            return txaio.gather(on_replies, consume_exceptions=True)

:return: a Deferred/Future gathering all async results from
            all handlers and/or parent handlers.
        """
        # print("firing '{}' from '{}'".format(event, hash(self)))
        if self._listeners is None:
            return txaio.create_future(result=[])

        self._check_event(event)
        res = []
        for handler in self._listeners.get(event, []):
            future = txaio.as_future(handler, *args, **kwargs)
            res.append(future)
        if self._parent is not None:
            res.append(self._parent.fire(event, *args, **kwargs))
        return txaio.gather(res, consume_exceptions=False)

d = txaio.as_future(comp.start, reactor)
        txaio.add_callbacks(
            d,
            partial(component_success, comp),
            partial(component_failure, comp),
        )
        return d

    # note that these are started in parallel -- maybe we want to add
    # a "connected" signal to components so we could start them in the
    # order they're given to run() as "a" solution to dependencies.
    dl = []
    for comp in components:
        d = component_start(comp)
        dl.append(d)
    done_d = txaio.gather(dl, consume_exceptions=False)

    def all_done(arg):
        log.debug("All components ended; stopping reactor")
        done_callback(reactor, arg)

    txaio.add_callbacks(done_d, all_done, all_done)
    return done_d