code: def _validate_nlu(
      validator: "Validator", fail_on_warnings: bool
  ) -> bool:
      return validator.verify_nlu(not fail_on_warnings)
  
imports: import json
  import argparse
  import logging
  import os
  import sys
  import time
  from types import FrameType
  from typing import Any, Dict, List, Optional, TYPE_CHECKING, Text, Union, overload
  import randomname
  import rasa.shared.utils.cli
  import rasa.shared.utils.io
  from rasa.shared.importers.importer import TrainingDataImporter
  from rasa.shared.constants import ASSISTANT_ID_DEFAULT_VALUE, ASSISTANT_ID_KEY, DEFAULT_CONFIG_PATH
  from rasa.shared.utils.cli import print_error
  from rasa import telemetry
label_desc: Use image node_id 11 for calling a global function with example usage: _validate_nlu(validator, fail_on_warnings) and returns: validator