每天laravel-20160722|Application-2

    /**     * Add a command to the console.     *     * @param  \Symfony\Component\Console\Command\Command  $command     * @return \Symfony\Component\Console\Command\Command     */    public function add(SymfonyCommand $command)    {        if ($command instanceof Command) {// check the command instance is right,            $command->setLaravel($this->laravel);// command instance to run the set function        }        return $this->addToParent($command);// use this function to add to Parent frame    }// add a command to the console.    /**     * Add the command to the parent instance.     *     * @param  \Symfony\Component\Console\Command\Command  $command     * @return \Symfony\Component\Console\Command\Command     */    protected function addToParent(SymfonyCommand $command)    {        return parent::add($command);// this a easy way or type    }// Add to the parent // use a wrap to make the function to easy know! or understand    /**     * Add a command, resolving through the application.     *     * @param  string  $command     * @return \Symfony\Component\Console\Command\Command     */    public function resolve($command)    {        return $this->add($this->laravel->make($command));// a add wrap, like mysql function query and thinkphp function find. yeah    }// add a command resolving through the application