def valid?
      pricing_type_validator = EnumAttributeValidator.new('String', ["FIXED_PRICING", "VARIABLE_PRICING"])
      return false unless pricing_type_validator.valid?(@pricing_type)
      inventory_alert_type_validator = EnumAttributeValidator.new('String', ["NONE", "LOW_QUANTITY"])
      return false unless inventory_alert_type_validator.valid?(@inventory_alert_type)
      return true
    end
def valid?
      pricing_type_validator = EnumAttributeValidator.new('String', ["FIXED_PRICING", "VARIABLE_PRICING"])
      return false unless pricing_type_validator.valid?(@pricing_type)
      inventory_alert_type_validator = EnumAttributeValidator.new('String', ["NONE", "LOW_QUANTITY"])
      return false unless inventory_alert_type_validator.valid?(@inventory_alert_type)
      return true
    end
Check to see if the all the properties in the model are valid
 @return true if the model is valid