code: def test_is_sequence(self):
      tmp_entry_list = []
      for prompt_num in range(0, 3):
          prompt = ["one", "two", "three"][prompt_num]
          output_entry = LLMFnOutputEntry(
              prompt_num=prompt_num,
              input_num=0,
              prompt=prompt,
              prompt_vars={},
              model_input=prompt,
              model_results=_get_empty_model_results(),
              output_rows=[],
          )
          tmp_entry_list.append(output_entry)
  
      outputs = LLMFnOutputs(tmp_entry_list)
      self._test_is_sequence(outputs)
  
file_path: generative-ai-python/tests/notebook/lib/test_llmfn_outputs.py
imports: from __future__ import annotations
  from typing import Sequence
  from absl.testing import absltest
  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 LLMFnOutputsTest obj's underlying member method code with example usage: obj.test_is_sequence() without return types