ISO8601
date timeConfiguration parameters
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warp.timeunits
The ISO8601
function consumes an optional STRING timezone and a LONG UTC timestamp and pushes back a STRING representing the date and time according to the ISO 8601 standard.
Depending on the platform time unit, the part representing seconds can have 3, 6 or 9 significant figures respectively for milliseconds, microseconds or nanoseconds platform time unit.
Valid values for the timezone can be found on the Joda website in any of the three columns. If no timezone is specified the pushed back representation is UTC.