docs: def validate_INCREASING(in_value, restriction):
      """
          Test to ensure the values in a list are increasing.
          Parameters: a list of values and None. The none is there simply
          to conform with the rest of the validation routines.
      """
  
      flat_list = _flatten_value(in_value)
  
      previous = None
      for a in flat_list:
          if previous is None:
              previous = a
              continue
          try:
              if a < previous:
                  raise ValidationError("INCREASING")
          except TypeError:
              raise  ValueError("INCREASING: Incompatible types")
          previous = a