protected function execute(InputInterface $input, OutputInterface $output)
 {
     $filename = $input->getArgument('filename');
     $type = $input->getOption('type');
     if (file_exists($filename)) {
         $data = \FreePBX::Bulkhandler()->fileToArray($filename);
     } else {
         $output->writeln('<error>The specified file does not exist or we cannot read it</error>');
         return false;
     }
     if (!$data) {
         $output->writeln('<error>The file provided did not process properly. Check the file formatting</error>');
         return false;
     }
     switch ($type) {
         case 'dids':
             $output->writeln('Importing bulk dids');
             $ret = \FreePBX::Bulkhandler()->import('dids', $data);
             break;
         case 'extensions':
             $output->writeln('Importing bulk extensions');
             $ret = \FreePBX::Bulkhandler()->import('extensions', $data);
             break;
         default:
             $output->writeln('<error>You must specify the file type of --type=dids or --type=extensions</error>');
             return false;
             break;
     }
     if (!$ret) {
         $output->writeln('<error>The import failed</error>');
         return false;
     } else {
         return true;
     }
 }
<?php

echo FreePBX::Bulkhandler()->showPage();