code: protected function directoryListing($path)
      {
          $this->typeCheck->directoryListing(func_get_args());
  
          $subPaths = array();
          foreach ($this->isolator->scandir($path) as $subPath) {
              if (
                  '.' === $subPath ||
                  '..' === $subPath
              ) {
                  continue;
              }
  
              $subPaths[] = sprintf('%s/%s', $path, $subPath);
          }
  
          return $subPaths;
      }
docs: @param string $path
  
  @return array<string>