Position.fromMap constructor
Serialization
Implementation
factory Position.fromMap(Map<String, dynamic> json) => Position._(
grid: json["grid"] == null ? null : Point(json["grid"]["x"], json["grid"]["y"]),
segment: json["segment"] == null ? null : Point(json["segment"]["x"], json["segment"]["y"]),
index: json["index"] == null ? null : json["index"],
);