code: def test_picklable(self):
      raw = dict(foo="bar")
      tz = from_timezone_name(self.timezone_name, raw)
      # https://docs.python.org/2/library/pickle.html#data-stream-format
      for protocol in (0, 1, 2, -1):
          pickled = pickle.dumps(tz, protocol=protocol)
          tz_unp = pickle.loads(pickled)
          self.assertEqual(tz, tz_unp)
  
file_path: geopy/test/test_timezone.py
imports: import datetime
  import pickle
  import unittest
  import pytest
  from geopy.timezone import Timezone, from_fixed_gmt_offset, from_timezone_name
label_desc: Use image node_id 8 for calling the TimezoneTestCase obj's underlying member method code with example usage: obj.test_picklable() without return types