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 _toggle_ignoring_sigint_v2_engine(self, toggle: bool):
        with self._ignore_sigint_lock:
            self._ignoring_sigint_v2_engine = toggle