pub fn render_duration(s: &str) -> Option<String>Expand description
Canonical openCypher rendering of duration(<string>), or None if the
string is not a recognised ISO-8601 duration. Handles the designator form
(P14DT16H12M, with decimal components like P0.75M/P2.5W spilling into
smaller units) and the alternative date-time form
(P2012-02-02T14:37:21.545).