protected override TValue ExecuteInContext(AudioMetadata.ValueHelper <TValue> context)
{
var value = context.GetCurrentValue(Argument);
context.TryRemoveValue(Argument);
return(value);
}
protected override void UndoInContext(AudioMetadata.ValueHelper <TValue> context, object savedInfo)
{
context.TryRemoveValue(Argument.BeatIndex);
}
