Interface representing the server response from the legacy method.
See [Send to a topic](/docs/cloud-messaging/admin/send-messages#send_to_a_topic) for code samples and detailed documentation.
Signature:
export interface MessagingTopicResponse
Properties
| Property | Type | Description |
|---|---|---|
| messageId | number | The message ID for a successfully received request which FCM will attempt to deliver to all subscribed devices. |
MessagingTopicResponse.messageId
The message ID for a successfully received request which FCM will attempt to deliver to all subscribed devices.
Signature:
messageId: number;