additionalProperty constant
additionalProperty [Expects: https://schema.org/PropertyValue]
A property-value pair representing an additional characteristic of the entity, e.g. a product feature or another characteristic for which there is no matching property in schema.org.\n\nNote: Publishers should be aware that applications designed to use specific schema.org properties (e.g. https://schema.org/width, https://schema.org/color, https://schema.org/gtin13, ...) will typically expect such data to be provided using those properties, rather than using the generic property/value mechanism.
Can be used on: https://schema.org/MerchantReturnPolicy, https://schema.org/Offer, https://schema.org/Place, https://schema.org/Product, https://schema.org/QualitativeValue, https://schema.org/QuantitativeValue
Implementation
static const additionalProperty = IriTerm.prevalidated(
'https://schema.org/additionalProperty',
);