colon), e.g. (:id "123" :time 54321 :from "foobar"). Null is printed as
nil, true as t and false as nil.
+This is version 1 of the structured output format.
+
Common non-terminals
--------------------
# A leaf part's body content is optional, but may be included if
# it can be correctly encoded as a string. Consumers should use
# this in preference to fetching the part content separately.
- content?: string
+ content?: string,
+ # If a leaf part's body content is not included, the length of
+ # the encoded content (in bytes) may be given instead.
+ content-length?: int,
+ # If a leaf part's body content is not included, its transfer encoding
+ # may be given. Using this and the encoded content length, it is
+ # possible for the consumer to estimate the decoded content length.
+ content-transfer-encoding?: string
}
# The headers of a message or part (format_headers_sprinter with reply = FALSE)