plusCode property Null safety
plusCode is an encoded location reference, derived from latitude and longitude coordinates, that represents an area: 1/8000th of a degree by 1/8000th of a degree (about 14m x 14m at the equator) or smaller. Plus codes can be used as a replacement for street addresses in places where they do not exist (where buildings are not numbered or streets are not named).
final PlusCode? plusCode;