prepareMultipartAlternativeMessage method Null safety

MessageBuilder prepareMultipartAlternativeMessage(
  1. {TransferEncoding transferEncoding = TransferEncoding.eightBit}

Convenience method for initiating a multipart/alternative message

In case you want to use 7bit instead of the default 8bit content transfer encoding, specify the optional encoding. You can also create a new MessageBuilder and call setContentType with the same effect when using the multipart/alternative media subtype.


static MessageBuilder prepareMultipartAlternativeMessage(
    {TransferEncoding transferEncoding = TransferEncoding.eightBit}) {
  return prepareMessageWithMediaType(MediaSubtype.multipartAlternative,
      transferEncoding: transferEncoding);