   defp mp_mixed_header(name, boundary) do
     headers =
       [{"Content-Disposition", "form-data", [{"name", "\"" <> name <> "\""}]},
-       {"Content-Type", "multipart/mixed", [{"boundary", boundary}]}
-      ]
+       {"Content-Type", "multipart/mixed", [{"boundary", boundary}]}]
     {mp_header(headers, boundary), 0}
   end
 

        boundary = new_boundary()

  """
  def new_boundary, do: "---------------------------" <> unique(16)

  @doc """

  Returns `{body_binary, size}`

  """
  @spec encode_form(parts :: [part_t]) :: {boundary_t, integer}
  def encode_form(parts), do: encode_form(new_boundary(), parts)
  @doc """
  multipart form encode.
