class_docstr: Example of a form validation action.
docstr: Check if a string is an integer.
code: def is_int(string: Text) -> bool:
      """Check if a string is an integer."""
  
      try:
          int(string)
          return True
      except ValueError:
          return False
  
file_path: rasa/examples/formbot/actions/actions.py
imports: from typing import Dict, Text, Any, List, Union
  from rasa_sdk import Tracker
  from rasa_sdk.executor import CollectingDispatcher
  from rasa_sdk.forms import FormValidationAction
label_desc: Use image node_id 3 for calling the ValidateRestaurantForm obj's underlying member method code with example usage: obj.is_int(string) and returns: True, False