def add(self, elem, replace=False):
        """Add a requirement.

        :param elem: a string or :class:`Requirement` instance.
        :param replace: if `True`, packages in the set with the same name will
            be removed first.
        """
        if isinstance(elem, text_type):
            elem = Requirement.coerce(elem)
        if replace and elem in self:
            self.remove(elem)
        super(Requirements, self).add(elem)
async def async_get_pickup_events() -> list[PickupEvent]:
        """Get the next pickup."""
        try:
            return await client.async_get_pickup_events(
                start_date=date.today(), end_date=date.today() + timedelta(weeks=4)
            )
        except RecollectError as err:
            raise UpdateFailed(
                f"Error while requesting data from ReCollect: {err}"
            ) from err