def valid?
      from_state_validator = EnumAttributeValidator.new('String', ["CUSTOM", "IN_STOCK", "SOLD", "RETURNED_BY_CUSTOMER", "RESERVED_FOR_SALE", "SOLD_ONLINE", "ORDERED_FROM_VENDOR", "RECEIVED_FROM_VENDOR", "IN_TRANSIT_TO", "NONE", "WASTE", "UNLINKED_RETURN"])
      return false unless from_state_validator.valid?(@from_state)
      to_state_validator = EnumAttributeValidator.new('String', ["CUSTOM", "IN_STOCK", "SOLD", "RETURNED_BY_CUSTOMER", "RESERVED_FOR_SALE", "SOLD_ONLINE", "ORDERED_FROM_VENDOR", "RECEIVED_FROM_VENDOR", "IN_TRANSIT_TO", "NONE", "WASTE", "UNLINKED_RETURN"])
      return false unless to_state_validator.valid?(@to_state)
      return true
    end
def valid?
      from_state_validator = EnumAttributeValidator.new('String', ["CUSTOM", "IN_STOCK", "SOLD", "RETURNED_BY_CUSTOMER", "RESERVED_FOR_SALE", "SOLD_ONLINE", "ORDERED_FROM_VENDOR", "RECEIVED_FROM_VENDOR", "IN_TRANSIT_TO", "NONE", "WASTE", "UNLINKED_RETURN"])
      return false unless from_state_validator.valid?(@from_state)
      to_state_validator = EnumAttributeValidator.new('String', ["CUSTOM", "IN_STOCK", "SOLD", "RETURNED_BY_CUSTOMER", "RESERVED_FOR_SALE", "SOLD_ONLINE", "ORDERED_FROM_VENDOR", "RECEIVED_FROM_VENDOR", "IN_TRANSIT_TO", "NONE", "WASTE", "UNLINKED_RETURN"])
      return false unless to_state_validator.valid?(@to_state)
      return true
    end
Check to see if the all the properties in the model are valid
 @return true if the model is valid