pub fn dummy_overseer_builder<Spawner, SupportsParachains>(
    spawner: Spawner,
    supports_parachains: SupportsParachains,
    registry: Option<&Registry>
) -> Result<OverseerBuilder<Init<SpawnGlue<Spawner>>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<DummySubsystem>, Init<HashMap<H256, Vec<Sender<Result<(), SubsystemError>>>>>, Init<HashMap<H256, Arc<Span>>>, Init<HashMap<H256, u32>>, Init<SupportsParachains>, Init<Metrics>>, SubsystemError>
where SpawnGlue<Spawner>: Spawner + 'static, SupportsParachains: HeadSupportsParachains,
Expand description

Create an overseer with all subsystem being Sub.

Preferred way of initializing a dummy overseer for subsystem tests.