public async override YarnTask PrepareForLinesAsync(IEnumerable<string> lineIDs, CancellationToken cancellationToken)

public override async YarnTask<LocalizedLine> GetLocalizedLineAsync(Line line, CancellationToken cancellationToken)

public override void DeregisterMarkerProcessor(string attributeName)

public override void RegisterMarkerProcessor(string attributeName, Markup.IAttributeMarkerProcessor markerProcessor)