clientKey property
The secret key that is used to streaming to the bridge.
This can be null if the bridge is not updated to the correct version, or
if it was not saved properly when first contact was made with this bridge.
This is used as the Pre-Shared Key (PSK) in the DTLS streaming connection. The client key is only exposed once (this is during first contact) and can not be retrieved again. This means if it is not saved properly the first time, this bridge needs to be deleted and first contact needs to be made again. It never expires, and remains valid as long as the whitelist entry of your app is in the bridge.
Implementation
final String? clientKey;