searchContacts method
Searches for contacts matching the given query.
query - The search term to match against contact names.
withProperties - Include phone numbers, emails, etc.
sorted - Sort results alphabetically.
Implementation
Future<List<Contact>> searchContacts(
String query, {
bool withProperties = false,
bool sorted = true,
}) {
throw UnimplementedError('searchContacts() has not been implemented.');
}