code: public function handle()
      {
          $this->info('Installing ...');
  
          $this->checkIfNotInstalled();
  
          if($this->isInstalled) {
              $this->info('This module was already installed');
              return;
          }
  
          $this->install();
  
          $this->addToInstalled();
  
          $this->info('UniSys module was installed');
  
      }
docs: /*
  Execute the console command.