class_docstr: A parameter that is optional in `combine()` and in the test signature.
code: def modified_arguments(self, kwargs, requested_parameters):
      if self._parameter_name in requested_parameters:
          return {}
      else:
          return {
              self._parameter_name: ParameterModifier.DO_NOT_PASS_TO_THE_TEST
          }
  
imports: from collections import OrderedDict
  import contextlib
  import types
  import unittest
  from absl.testing import parameterized
  import six
  from tensorflow.python.util import tf_inspect
label_desc: Use image node_id 1 for calling the OptionalParameter obj's underlying member method code with example usage: obj.modified_arguments(kwargs, requested_parameters) and returns: dict, dict