class_docstr: Characters used by progress trackers.
class_docstr_tok: ["Characters","used","by","progress","trackers","."]
code: def spin_marks(self):
      return ["⠏", "⠛", "⠹", "⠼", "⠶", "⠧"]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import unicode_literals
  import os
  import sys
  import unicodedata
  from fire.console import console_attr_os
  from fire.console import encoding
  from fire.console import text
  import six
label_desc: Use image node_id 1 for calling the ProgressTrackerSymbolsUnicode obj's underlying member method code with example usage: obj.spin_marks() and returns: list