gs1Telephone constant
IriTerm
const gs1Telephone
telephone from gs1 vocabulary [Expects: http://www.w3.org/2001/XMLSchema#string]
A telephone number for example +44 217 992 9999.
Can be used on: https://ref.gs1.org/voc/ContactPoint
Implementation
static const gs1Telephone = IriTerm('https://ref.gs1.org/voc/telephone');