pub trait DeviceProviderImpl: DeviceProviderImplExt + GstObjectImpl + Send + Sync {
fn metadata() -> Option<&'static DeviceProviderMetadata> { ... }
fn probe(&self, device_provider: &Self::Type) -> Vec<Device>ⓘ { ... }
fn start(&self, device_provider: &Self::Type) -> Result<(), LoggableError> { ... }
fn stop(&self, device_provider: &Self::Type) { ... }
}