gets the id of the attachment . concode_field_sep String filename concode_elem_sep int filesize concode_elem_sep String id concode_elem_sep String url concode_field_sep IGuild getGuild concode_elem_sep int getFilesize concode_elem_sep IUser getAuthor concode_elem_sep IMessage edit concode_elem_sep boolean isPinned concode_elem_sep String getContent concode_elem_sep List<IUser> getMentions concode_elem_sep boolean mentionsEveryone concode_elem_sep void delete concode_elem_sep Optional<LocalDateTime> getEditedTimestamp concode_elem_sep List<Attachment> getAttachments concode_elem_sep String getUrl concode_elem_sep String getFilename concode_elem_sep IChannel getChannel concode_elem_sep LocalDateTime getTimestamp concode_elem_sep List<IRole> getRoleMentions concode_elem_sep void reply
String function ( ) { return id ; }