code: def test_unicode_properties(self):
      with open("tests/data.geojson") as file_:
          obj = geojson.load(file_)
      geojson.dump(obj, StringIO())
  
file_path: geojson/tests/test_features.py
imports: from io import StringIO
  import unittest
  import geojson
label_desc: Use image node_id 2 for calling the FeaturesTest obj's underlying member method code with example usage: obj.test_unicode_properties() without return types