encode method
Implementation
String? encode() {
switch (this) {
case ExperimentKind.EMBED:
return 'EMBED';
case ExperimentKind.POPUP:
return 'POPUP';
case ExperimentKind.TOOLTIP:
return 'TOOLTIP';
case ExperimentKind.CONFIG:
return 'CONFIG';
case ExperimentKind.UNKNOWN:
return null;
}
}