* Implement base for MQTT device registry integration * Lint * Lint * Address comments * Lint * Lint * Address comments * Only add keys if specified See https://github.com/home-assistant/home-assistant/pull/17136#discussion_r223267185
* Implement base for MQTT device registry integration * Lint * Lint * Address comments * Lint * Lint * Address comments * Only add keys if specified See https://github.com/home-assistant/home-assistant/pull/17136#discussion_r223267185