code: def cells(self):
      return iter(self.nb["cells"][1:])
  
file_path: wandb/tests/pytest_tests/unit_tests_old/utils/notebook_client.py
imports: from nbclient import NotebookClient
  from nbclient.client import CellExecutionError
label_desc: Use image node_id 5 for calling the WandbNotebookClient obj's underlying member method code with example usage: obj.cells() and returns: iter