threadKey property

String? threadKey
getter/setter pair

Input for creating or updating a thread.

Otherwise, output only. ID for the thread. Supports up to 4000 characters. This ID is unique to the Chat app that sets it. For example, if multiple Chat apps create a message using the same thread key, the messages are posted in different threads. To reply in a thread created by a person or another Chat app, specify the thread name field instead.

Optional.

Implementation

core.String? threadKey;