code: def is_prerelease(self):
      return self.dev is not None or self.pre is not None
  
imports: from __future__ import absolute_import, division, print_function
  import collections
  import itertools
  import re
  from ._structures import Infinity
label_desc: Use image node_id 12 for calling the Version obj's underlying member method code with example usage: obj.is_prerelease() and returns: unknown