toOptionsJSON method
Implementation
@override
void toOptionsJSON(StringBuffer buffer) {
super.toOptionsJSON(buffer);
if (duration != null) {
buffer.writeAll(['"duration":', duration, ','], '');
}
}
@override
void toOptionsJSON(StringBuffer buffer) {
super.toOptionsJSON(buffer);
if (duration != null) {
buffer.writeAll(['"duration":', duration, ','], '');
}
}