docs: def fake_decimal(self, field_name):
          """
          Validate if the field has a `max_digits` and `decimal_places`
          And generating the unique decimal number.
  
          Usage:
              faker.fake_decimal('field_name')
  
          Example:
              10.7, 13041.00, 200.000.000
          """
          return self.djipsum_fields().randomDecimalField(
              self.model_class(),
              field_name=field_name
          )