// Manager integrity and reset
private void checkValidity()
{
SketchfabPlugin.checkValidity();
if (_api == null)
{
_api = SketchfabPlugin.getAPI();
}
if (_sketchfabModels == null)
{
_sketchfabModels = new OrderedDictionary();
}
if (_categories == null)
{
fetchCategories();
}
if (_importer == null)
{
_importer = new SketchfabImporter(ImportProgress, ImportFinish);
}
}