public function startup(InputInterface $input, OutputInterface $output)
    {
        $this->input = $input;
        $this->output = $output;
    }
public function startup(InputInterface $input, OutputInterface $output)
    {
        $this->input = $input;
        $this->output = $output;
    }
public function startup ( InputInterface $ input , OutputInterface $ output ) { $ this -> input = $ input ; $ this -> output = $ output ; }
The startup function should be called each time a command is being executed. It
saves the Input and Output interfaces to allow the command to use it further down
the process.
@param  InputInterface  $input  The current input interface
@param  OutputInterface $output The current output interface
@return null
The startup function should be called each time a command is being executed . It saves the Input and Output interfaces to allow the command to use it further down the process .