tryFromKeyPath method
Implementation
JSON? tryFromKeyPath(dynamic key) {
final keyPaths = JSON(key).list;
if (keyPaths == null) return null;
JSON? json = this;
for (var i = 0; i < keyPaths.length; i++) {
if (json == null) return null;
json = json[keyPaths[i]];
}
return json;
}