toJson method
Implementation
Map<String, dynamic> toJson() {
final json = <String, dynamic>{};
if (from != null) {
json[r'from'] = from;
}
if (to != null) {
json[r'to'] = to;
}
if (rank != null) {
json[r'rank'] = rank;
}
if (type != null) {
json[r'type'] = type;
}
if (strengthRange != null) {
json[r'strengthRange'] = strengthRange;
}
if (substance != null) {
json[r'substance'] = substance;
}
return json;
}