unitText constant
unitText [Expects: http://schema.org/Text]
A string or text indicating the unit of measurement. Useful if you cannot provide a standard unit code for unitCode.
Can be used on: http://schema.org/PropertyValue, http://schema.org/QuantitativeValue, http://schema.org/TypeAndQuantityNode, http://schema.org/UnitPriceSpecification
Implementation
static const unitText = IriTerm.prevalidated('http://schema.org/unitText');