availabilityStarts constant
availabilityStarts [Expects: http://schema.org/Date, http://schema.org/DateTime, http://schema.org/Time]
The beginning of the availability of the product or service included in the offer.
Can be used on: http://schema.org/ActionAccessSpecification, http://schema.org/Demand, http://schema.org/Offer
Implementation
static const availabilityStarts = IriTerm.prevalidated(
'http://schema.org/availabilityStarts',
);