class_docstr: Mock model that returns a caller-provided result.
class_docstr_tok: ["Mock","model","that","returns","a","caller-provided","result","."]
code: def call_model(
      self,
      model_input: str,
      model_args: model_lib.ModelArguments | None = None,
  ) -> model_lib.ModelResults:
      return model_lib.ModelResults(
          model_input=model_input, text_results=self._mock_results
      )
  
imports: from __future__ import annotations
  from typing import Any, Callable, Mapping, Sequence
  from absl.testing import absltest
  from google.generativeai.notebook.lib import llm_function
  from google.generativeai.notebook.lib import llmfn_inputs_source
  from google.generativeai.notebook.lib import llmfn_output_row
  from google.generativeai.notebook.lib import llmfn_outputs
  from google.generativeai.notebook.lib import model
label_desc: Use image node_id 2 for calling the _MockModel obj's underlying member method code with example usage: obj.call_model(model_input, model_args) and returns: model_lib