toMap method
Implementation
Map<String, dynamic> toMap() => {
'@type': 'PostalAddress',
if (streetAddress != null) 'streetAddress': streetAddress,
if (addressLocality != null) 'addressLocality': addressLocality,
if (addressRegion != null) 'addressRegion': addressRegion,
if (postalCode != null) 'postalCode': postalCode,
if (addressCountry != null) 'addressCountry': addressCountry,
};