code: def test_code_to_line_no_code():
      line, pos = code_to_line("", 0)
      assert line == ""
      assert pos == 0
  
imports: import copy
  import json
  from unittest import TestCase
  from jupyter_client.adapter import V4toV5, adapt, code_to_line
  from jupyter_client.session import Session
label_desc: Use image node_id 2 for calling a global function with example usage: test_code_to_line_no_code() without return types