gtin14 constant
gtin14 [Expects: https://schema.org/Text]
The GTIN-14 code of the product, or the product to which the offer refers. See GS1 GTIN Summary for more details.
Can be used on: https://schema.org/Demand, https://schema.org/Offer, https://schema.org/Product
Implementation
static const gtin14 = IriTerm.prevalidated('https://schema.org/gtin14');