code: public function formatStacktrace(array $trace, $stripFilepath = '', $trimPath = '')
      {
          $out = '';
          foreach ($trace as $index => $row) {
  
              if ($stripFilepath && isset($row['file']) && strpos($row['file'], $stripFilepath) !== false) {
                  continue;
              }
  
              if ($trimPath && isset($row['file'])) {
                  $row['file'] = str_replace($trimPath, '', $row['file']);
              }
  
              if (isset($row['file'])) {
                  $out .= "[$index] {$row['file']}:{$row['line']}\n";
              } else {
                  // sometimes there is undefined index 'file'
                  $out .= "[$index] (?) {$row['class']}:{$row['function']}\n";
              }
  
          }
  
          return $out;
      }
docs: Formats a stack trace array generated by debug_backtrace
  
  Inspired by @see mageDebugBacktrace
  
  @param array  $trace
  @param string $stripFilepath
  @return string