code: def test_empty_code_cell(self):
      cc = new_code_cell()
      self.assertEqual(cc.cell_type, "code")
      self.assertEqual("input" not in cc, True)
      self.assertEqual("prompt_number" not in cc, True)
      self.assertEqual(cc.outputs, [])
      self.assertEqual(cc.collapsed, False)
  
imports: from __future__ import annotations
  from unittest import TestCase
  import pytest
  from nbformat.v3.nbbase import NotebookNode, nbformat, new_author, new_code_cell, new_heading_cell, new_metadata, new_notebook, new_output, new_text_cell, new_worksheet
label_desc: Use image node_id 1 for calling the TestCell obj's underlying member method code with example usage: obj.test_empty_code_cell() without return types