 	}
 }
 
-/// Subscribes to the given signal producer.
-private func startNextSignalProducer<T, E>(signalProducer: SignalProducer<T, E>, state: ConcatState<T, E>) {
-	let serialDisposable = SerialDisposable()
-	let serialDisposableCompositeHandle = state.disposable.addDisposable(serialDisposable)
-
-	serialDisposable.innerDisposable = signalProducer.start(next: { value in
-		sendNext(state.observer, value)
-	}, error: { error in
-		sendError(state.observer, error)
-	}, completed: {
-		serialDisposableCompositeHandle.remove()
-
-		if let nextSignalProducer = state.dequeueSignalProducer() {
-			startNextSignalProducer(nextSignalProducer, state)
-		}
-	})
-}
-
 private final class ConcatState<T, E: ErrorType> {
 	/// The observer of a started `concat` producer.
 	let observer: Signal<T, E>.Observer

		}

		return nextSignalProducer
	}
}


		}

		if shouldStart {
			startNextSignalProducer(producer)
		}
	}

