toMap method
Implementation
Map<String, dynamic> toMap() {
final Map<String, dynamic> optionsMap = <String, dynamic>{};
void addIfNonNull(String fieldName, dynamic value) {
if (value != null) {
optionsMap[fieldName] = value;
}
}
addIfNonNull('speed', this.speed);
addIfNonNull('unit', this.unit);
addIfNonNull('unknown', this.unknown);
addIfNonNull('none', this.none);
return optionsMap;
}