txspinneret route('') issue

resource.py

from txspinneret.interfaces import ISpinneretResource
from txspinneret.route import Router, routedResource
from zope.interface import implementer


@routedResource
@implementer(ISpinneretResource)
class Root(object):
    router = Router()

    @router.subroute('working')
    def foo(self, request, params):
        return Working()

    @router.subroute('broken')
    def foo(self, request, params):
        return Broken()



@routedResource
@implementer(ISpinneretResource)
class Working(object):
    router = Router()

    @router.route('/')
    def index(self, request, params):
        return Plain('index!')



@routedResource
@implementer(ISpinneretResource)
class Broken(object):
    router = Router()

    @router.route('')
    def index(self, request, params):
        return Plain('index!')



@implementer(ISpinneretResource)
class Plain(object):
    def __init__(self, message):
        self.message = message


    def render_GET(self, request):
        return self.message