[null,null,["最后更新时间 (UTC)：2023-12-02。"],[[["`RequestData` objects encapsulate data for media event requests within the Cast framework."],["These objects include details like request type, application-specific data, media session ID, request ID, and a sequence number for queue synchronization."],["The `customData` property allows for flexible extension of the media protocol by enabling the sender and receiver to exchange application-specific information."],["`mediaSessionId`, `requestId`, and `sequenceNumber` provide identifiers and context for managing and tracking media requests within a session."]]],["`RequestData` is a class for media event requests, requiring a non-null `type` upon construction. It includes `customData` for application-specific extensions, a `mediaSessionId` for the relevant media session, and a `requestId` for request/response correlation. It also uses `sequenceNumber` for synchronizing queue commands, ensuring that the queue's latest sequence number matches the request.\n"]]
