Function aws_sigv4::event_stream::sign_empty_message

pub fn sign_empty_message<'a>(
    last_signature: &'a str,
    params: &'a SigningParams<'a>
) -> SigningOutput<Message>

Returns a signed empty message

Empty signed event stream messages differ from normal signed event stream in that the payload is 0-bytes rather than a nested message. There is no way to create a signed empty message using sign_message.