code: private function indent($output, $asArray = false)
      {
          $lines = explode("\n", $output);
          $out = [];
          foreach ($lines as $line) {
              $out[] = '   > ' . $line;
          }
          if ($asArray) {
              return $out;
          }
          $return = implode("\n", $out);
          return $return;
      }
docs: Utility function to prefix output lines with an indent
  
  @param string $output
  @param bool $asArray
  @return string