code: protected function expandPath($path) {
          $path = (array) $path;
          $isAbsolute = $path[0][0] === '/';
  
          return $isAbsolute
              ? $path
              : array_merge((array) $this->type, $path);
      }
docs: Expand a given path (array or string)
  If this is not an absolute path index + type will be prepended
  If it is an absolute path it will be used as is
  
  @param mixed $path
  @return array