code: def all_output_text(self):
      text = ""
      for i in range(len(self.nb["cells"]) - 1):
          text += self.cell_output_text(i)
      return text
  
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 4 for calling the WandbNotebookClient obj's underlying member method code with example usage: obj.all_output_text() and returns: text