Function polkadot_overseer::dummy::dummy_overseer_builder

pub fn dummy_overseer_builder<'a, Spawner, SupportsParachains>(
    spawner: Spawner, 
    supports_parachains: SupportsParachains, 
    registry: Option<&'a Registry>
) -> Result<OverseerBuilder<Spawner, SupportsParachains, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem, DummySubsystem>, SubsystemError> where
    Spawner: SpawnNamed + Send + Sync + 'static,
    SupportsParachains: HeadSupportsParachains, 

Create an overseer with all subsystem being Sub.

Preferred way of initializing a dummy overseer for subsystem tests.