AudioEventBackend import { AudioEventBackend } from "destack:audio/binding"; Audio backend event. export struct AudioEventBackend { kind: "backend"; timestampNs: uint64; sequence: uint64; backend: AudioBackendKind; isAvailable: boolean; } language/library/src/audio/binding/event.ds:89:100 Members kind: "backend" Event discriminator. timestampNs: uint64 Event timestamp in nanoseconds. sequence: uint64 Event sequence number. backend: AudioBackendKind Audio backend. isAvailable: boolean Whether the backend is available.