code: def test_asset_uid_readonly():
      a = Asset()
      with pytest.raises(
          TraitError, match=r".*uid.* trait is read-only.*"
      ):
          a.uid = "abc"
  
imports: import re
  import pytest
  import numpy
  from numpy.testing import assert_allclose
  import pyquaternion
  from traitlets import TraitError
  from unittest import mock
  from kubric.core import Asset
  from kubric.core import UndefinedAsset
  from kubric.core import objects
  from kubric.core import materials
label_desc: Use image node_id 4 for calling a global function with example usage: test_asset_uid_readonly() without return types