code: def is_valid_version_string(cls, version_string):
      if not version_string:
          return False
      match = cls._regex.search(version_string)
      return bool(match)
  
imports: from __future__ import absolute_import, division, print_function
  from copy import deepcopy
  from attr import attrs, attrib
  import re
  import six
label_desc: Use image node_id 17 for calling the Version obj's underlying member method code with example usage: obj.is_valid_version_string(cls, version_string) and returns: bool, False