src/Application/SimpleApplication.php
public function pipeline(PipelineInterface $pipeline = null) : PipelineInterface
    {
        if ($pipeline){
            $this->pipeline = $pipeline;
        }
        if (!$this->pipeline){
            $this->pipeline = new NullPipeline;
        }
        return $this->pipeline;
    }
public function pipeline(PipelineInterface $pipeline = null) : PipelineInterface
    {
        if ($pipeline){
            $this->pipeline = $pipeline;
        }
        if (!$this->pipeline){
            $this->pipeline = new NullPipeline;
        }
        return $this->pipeline;
    }
public function pipeline ( PipelineInterface $ pipeline = null ) : PipelineInterface { if ( $ pipeline ) { $ this -> pipeline = $ pipeline ; } if ( ! $ this -> pipeline ) { $ this -> pipeline = new NullPipeline ; } return $ this -> pipeline ; }
Set/get pipeline

@param PipelineInterface $pipeline

@return PipelineInterface
Set / get pipeline