class Builder

parameter　delegate　Object

The initial delegate that will be wrapped by the queue.

def initialize(delegate = nil)
	# The client side middleware, in the order they should be applied to a job:
	@enqueue = []
	
	# The server side middleware, in the order they should be applied to a job:
	@dequeue = []
	
	# The output delegate, if any:
	@delegate = delegate
end