pub fn system_time_range_from_date_and_adjuster(
start_date: &str,
end_date: Option<&str>,
days_adjuster: Option<&str>
) -> Result<(SystemTime, SystemTime)>Expand description
Convert from date range and an optional days adjuster to a start and end
SystemTime. Days adjuster is of form y[y…]. Each “y” will deduct 1 day
from the resulting time.