code: def test_code_cell(self):
      cc = new_code_cell(code="a=10", prompt_number=0)
      self.assertEqual(cc.code, "a=10")
      self.assertEqual(cc.prompt_number, 0)
  
file_path: nbformat/tests/v1/test_nbbase.py
imports: from __future__ import annotations
  from unittest import TestCase
  from nbformat.v1.nbbase import new_code_cell, new_notebook, new_text_cell
label_desc: Use image node_id 2 for calling the TestCell obj's underlying member method code with example usage: obj.test_code_cell() without return types