code: def testMergeOptionsDifferentType(self):
      options1, options2 = _TestOptions(), _NestedTestOptions()
      with self.assertRaisesRegex(
          TypeError,
          r"Could not merge incompatible options of type "
          r"\<class \'__main__._NestedTestOptions\'\> and "
          r"\<class \'__main__._TestOptions\'\>.",
      ):
          options.merge_options(options1, options2)
  
imports: from absl.testing import parameterized
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.util import options
  from tensorflow.python.framework import combinations
  from tensorflow.python.platform import test
label_desc: Use image node_id 8 for calling the OptionsTest obj's underlying member method code with example usage: obj.testMergeOptionsDifferentType() without return types