code: def test_feature_no_id():
      """Feature has no id"""
      feat = Feature()
      assert feat.id is None
  
imports: import pytest
  from fiona.errors import FionaDeprecationWarning
  from fiona.model import _Geometry, Feature, Geometry, Object, ObjectEncoder, Properties, decode_object
label_desc: Use image node_id 16 for calling a global function with example usage: test_feature_no_id() without return types