pub trait MqttClient: Send + Sync {
// Required method
fn publish_bytes<'life0, 'async_trait>(
&'life0 self,
topic: String,
qos: Qos,
payload: Vec<u8>,
) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
}