http.async.client.part documentation
Asynchronous HTTP Client - Clojure - Multipart API
create-bytearray-part
(create-bytearray-part {:keys [name file-name data mime-type charset]})
Create byte array multipart part
create-file-part
(create-file-part {:keys [name file mime-type charset]})
Create file multipart part
create-part
(create-part {type :type, :as opts})
Create multipart part according to spec
create-string-part
(create-string-part {:keys [name value charset]})
Create string multipart part