-record(stream_part, {
    headers :: list({binary(), binary()}),
    name :: gleam@option:option(binary()),
    filename :: gleam@option:option(binary()),
    content_type :: gleam@option:option(binary()),
    body :: gleam@yielder:yielder({ok, bitstring()} |
        {error, multipartkit@error:multipart_error()})
}).