def __init__(self, groups=None):
        super(GroupedRequirements, self).__init__(NamedRequirements)
        self.groups = groups or self.default_groups
        self.filename = None
        self.create_default_groups()
def step_impl(context, rel_url):
    context.request = LazyRequest(
        'POST', context.helpers.url(rel_url), context.token)