Optionalasynctrue in an async receipt.
OptionalbodyAlways empty; present in a synchronous response.
OptionalcontentThe Content-Length header as a number; present in a synchronous response when the server sends one that parses.
OptionalheadersResponse headers by name; of repeated headers the last one wins. Present in a synchronous response.
OptionalrequestId of the request; present in an async receipt. http:response and http.abort use it.
OptionalresponseAlways text; present in a synchronous response.
OptionalstatusHTTP status code; present in a synchronous response.
Always true here; a failed call resolves with ApiFailure instead.
Successful response from
http.head.