pub const ATTACHMENT_UNUSED: AttachmentId = _; // 18_446_744_073_709_551_615usizeExpand description
An AttachmentId that can be used instead of providing an attachment.
pub const ATTACHMENT_UNUSED: AttachmentId = _; // 18_446_744_073_709_551_615usizeAn AttachmentId that can be used instead of providing an attachment.