code: public static function fixPath($path) {
          // fix directory separators
          $fixed = \mb_ereg_replace('[\\\\\\/]+', DIRECTORY_SEPARATOR, $path);
  
          return \file_exists($fixed) ? \realpath($fixed) : $fixed;
      }
docs: @internal
  
  Fix path to match runtime system requirements, for e.g. directory separator.
  
  @param string $path Path to fix
  
  @return string Fixed path