Normalizes a valid ISO-8601 timestamp string or Date instance to the provenance end-card text 'Data as of YYYY-MM-DD' (UTC calendar date).
Date
'Data as of YYYY-MM-DD'
Throws an Error if asOf is empty, not a string or Date, or cannot be parsed as a valid calendar date.
Error
asOf
Normalizes a valid ISO-8601 timestamp string or
Dateinstance to the provenance end-card text'Data as of YYYY-MM-DD'(UTC calendar date).Throws an
ErrorifasOfis empty, not a string orDate, or cannot be parsed as a valid calendar date.