contactBirthday constant
IriTerm
const contactBirthday
birthday from contact vocabulary [Expects: http://www.w3.org/2000/10/swap/pim/contact#Date]
Can be used on: http://www.w3.org/2000/10/swap/pim/contact#SocialEntity
Implementation
static const contactBirthday = IriTerm(
'http://www.w3.org/2000/10/swap/pim/contact#birthday',
);