collapseId property

String? collapseId
final

An arbitrary identifier that, if assigned to multiple messages, APNs uses to coalesce the messages into a single push notification instead of delivering each message individually. This value can't exceed 64 bytes.

Amazon Pinpoint specifies this value in the apns-collapse-id request header when it sends the notification message to APNs.

Implementation

final String? collapseId;