fn generate_series_timestamptz_impl(
time_zone: &str,
start: Timestamptz,
stop: Timestamptz,
step: Interval,
) -> Result<impl Iterator<Item = Timestamptz> + use<>>
fn generate_series_timestamptz_impl(
time_zone: &str,
start: Timestamptz,
stop: Timestamptz,
step: Interval,
) -> Result<impl Iterator<Item = Timestamptz> + use<>>