module Lithic::Internal::Util

def encode_multipart_streaming(body)
ry = SecureRandom.urlsafe_base64(60)
g = []
= writable_enum do |y|
 body
ash
dy.each do |key, val|
case val
in Array if val.all? { primitive?(_1) }
  val.each do |v|
    write_multipart_chunk(y, boundary: boundary, key: key, val: v, closing: closing)
  end
else
  write_multipart_chunk(y, boundary: boundary, key: key, val: val, closing: closing)
end
d

ite_multipart_chunk(y, boundary: boundary, key: nil, val: body, closing: closing)
 "--#{boundary}--\r\n"
io = fused_enum(strio) { closing.each(&:call) }
ary, fused_io]