public SceneLoadArgs(string path, LoadSceneMode md)
 {
     _assetPath = path;
     SceneMode  = md;
     _priority  = -1;
     UnloadMode = UnLoadSceneMode.None;
 }
 public SceneLoadArgs(string path, LoadSceneMode md, UnLoadSceneMode unloadmd, int priority)
 {
     _assetPath = path;
     SceneMode  = md;
     _priority  = priority;
     UnloadMode = unloadmd;
 }
 public SceneLoadArgs(string path)
 {
     _assetPath = path;
     SceneMode  = LoadSceneMode.Single;
     _priority  = -1;
     UnloadMode = UnLoadSceneMode.None;
 }