fn start_consensus(
client: Arc<TFullClient<OpaqueBlock, RuntimeApi, NativeElseWasmExecutor<ParachainNativeExecutor>>>,
block_import: ParachainBlockImport<OpaqueBlock, Arc<TFullClient<OpaqueBlock, RuntimeApi, NativeElseWasmExecutor<ParachainNativeExecutor>>>, TFullBackend<OpaqueBlock>>,
prometheus_registry: Option<&Registry>,
telemetry: Option<TelemetryHandle>,
task_manager: &TaskManager,
relay_chain_interface: Arc<dyn RelayChainInterface>,
transaction_pool: Arc<FullPool<OpaqueBlock, TFullClient<OpaqueBlock, RuntimeApi, NativeElseWasmExecutor<ParachainNativeExecutor>>>>,
sync_oracle: Arc<SyncingService<OpaqueBlock>>,
keystore: KeystorePtr,
relay_chain_slot_duration: Duration,
para_id: ParaId,
collator_key: CollatorPair,
overseer_handle: OverseerHandle,
announce_block: Arc<dyn Fn(OpaqueHash, Option<Vec<u8>>) + Send + Sync>
) -> Result<(), Error>