* Get the subject for the document (message) this iterator is pointing * at. * * @return the subject */

* Gets the message-id if it exists, or nullopt otherwise. * * @return string or nullopt */

* Get a list of message's MIME-parts * * @param message_scm a Message (foreign-object) * * @return a list of MIME parts, each is a pair * ( mi

* Create a port for the mime-part * * @param mime_obj mime object (foreign object) * @param content_only_scm whether to not include headers * @par

* flag_info */

* flags_filter */

* flags_from_delta_expr */

* flags_from_expr */