Captured
data class Captured(val attachmentId: String, val eventId: String, val widthPx: Int, val heightPx: Int, val byteCount: Int) : ScreenshotResult
The capture succeeded and was written through AttachmentStore with RedactionApplicability.NOT_APPLICABLE, then mirrored onto the timeline as a "screenshot" event carrying attachmentId. eventId is that timeline event's id.