clientAssignedMessageId property
A custom ID for the message.
You can use field to identify a message, or to get, delete, or update a
message. To set a custom ID, specify the
[messageId
](https://developers.google.com/chat/api/reference/rest/v1/spaces.messages/create#body.QUERY_PARAMETERS.message_id)
field when you create the message. For details, see
Name a message.
Optional.
Implementation
core.String? clientAssignedMessageId;