static Project()
 {
     k_EngineImp = new SearchApiBaseImp <EngineAttribute, IEngine>(searchType);
 }
 static ObjectSelector()
 {
     k_EngineImp = new SearchApiBaseImp <EngineAttribute, IEngine>(searchType, "Object Selector");
 }
 static Scene()
 {
     k_EngineImp = new SearchApiBaseImp <EngineAttribute, IEngine>(searchType);
 }