// === ExportRole ==========
public virtual void RegisterExporter(string format, EditorExporter exporter)
{
_formatAndExporter.Add(Tuple.Create(format, exporter));
}
// ========================================
// constructor
// ========================================
public ExportCommand(IEditor target, EditorExporter exporter, string outputPath)
{
_target = target;
_exporter = exporter;
_outputPath = outputPath;
}
