framework/console/Application.php
public function init()
    {
        parent::init();
        if ($this->enableCoreCommands) {
            foreach ($this->coreCommands() as $id => $command) {
                if (!isset($this->controllerMap[$id])) {
                    $this->controllerMap[$id] = $command;
                }
            }
        }
        // ensure we have the 'help' command so that we can list the available commands
        if (!isset($this->controllerMap['help'])) {
            $this->controllerMap['help'] = 'yii\console\controllers\HelpController';
        }
    }
public function init()
    {
        parent::init();
        if ($this->enableCoreCommands) {
            foreach ($this->coreCommands() as $id => $command) {
                if (!isset($this->controllerMap[$id])) {
                    $this->controllerMap[$id] = $command;
                }
            }
        }
        // ensure we have the 'help' command so that we can list the available commands
        if (!isset($this->controllerMap['help'])) {
            $this->controllerMap['help'] = 'yii\console\controllers\HelpController';
        }
    }
Initialize the application.