pub trait DeviceProxyInterface: Send + Sync {
type GetPowerWattsResponseFut: Future<Output = Result<DeviceGetPowerWattsResult, Error>> + Send;
type GetVoltageVoltsResponseFut: Future<Output = Result<DeviceGetVoltageVoltsResult, Error>> + Send;
type GetSensorNameResponseFut: Future<Output = Result<String, Error>> + Send;
// Required methods
fn get_power_watts(&self) -> Self::GetPowerWattsResponseFut;
fn get_voltage_volts(&self) -> Self::GetVoltageVoltsResponseFut;
fn get_sensor_name(&self) -> Self::GetSensorNameResponseFut;
}