src/Pipeline/Containerized.php
public function pipe($stage)
	{
		$pipeline = new self($this->container, $this->stages);
		$this->handleStage($pipeline->stages, $stage);

		return $pipeline;
	}
public function pipe($stage)
	{
		$pipeline = new self($this->container, $this->stages);
		$this->handleStage($pipeline->stages, $stage);

		return $pipeline;
	}
Pushes the middleware on pipeline

@param string|MiddlewareInterface $stage
@return Pipeline