code: def expiration(self):
      return self._expiration
  
file_path: datalad/datalad/support/third/nda_aws_token_generator.py
imports: import binascii
  import hashlib
  import logging
  import xml.etree.ElementTree
  import sys
label_desc: Use image node_id 5 for calling the Token obj's underlying member method code with example usage: obj.expiration() and returns: self