code: def get_none_policy_text(none_policy,   # type: int
                           verbose=False  # type: bool
                           ):
      
      if none_policy is NonePolicy.SKIP:
          return "accept None without performing validation" if verbose else 'SKIP'
      elif none_policy is NonePolicy.FAIL:
          return "fail on None without performing validation" if verbose else 'FAIL'
      elif none_policy is NonePolicy.VALIDATE:
          return "validate None as any other values" if verbose else 'VALIDATE'
      elif none_policy is NoneArgPolicy.SKIP_IF_NONABLE_ELSE_FAIL:
          return "accept None without validation if the argument is optional, otherwise fail on None" if verbose \
              else 'SKIP_IF_NONABLE_ELSE_FAIL'
      elif none_policy is NoneArgPolicy.SKIP_IF_NONABLE_ELSE_VALIDATE:
          return "accept None without validation if the argument is optional, otherwise validate None as any other " \
                 "values" if verbose else 'SKIP_IF_NONABLE_ELSE_VALIDATE'
      else:
          raise ValueError('Invalid none_policy ' + str(none_policy))
docs: Returns a user-friendly description of a NonePolicy taking into account NoneArgPolicy
  
      :param none_policy:
      :param verbose:
      :return: