code: def combine(path1, path2):
      # type: (Text, Text) -> Text
      
      if not path1:
          return path2.lstrip()
      return "{}/{}".format(path1.rstrip("/"), path2.lstrip("/"))
docs: Join two paths together.
  
      This is faster than :func:`~fs.path.join`, but only works when the
      second path is relative, and there are no back references in either
      path.
  
      Arguments:
          path1 (str): A PyFilesytem path.
          path2 (str): A PyFilesytem path.
  
      Returns:
          str: The joint path.
  
      Example:
          >>> combine("foo/bar", "baz")
          'foo/bar/baz'