format

sf-boolean - structured fields boolean as defined in RFC8941

JSON Data Type: string.

The sf-boolean format represents a structured fields boolean as defined in RFC8941.

sf-boolean = "?" boolean
boolean    = "0" / "1"

A Boolean is indicated with a leading “?” character followed by a “1” for a true value or “0” for false.

This format is appropriate for a header value that must conform to the sf-boolean structured field definition.