docs: public List<Motion> findCameraMotions(Camera target , @Nullable List<Motion> storage ) {
  		if( storage == null )
  			storage = new ArrayList<>();
  
  		for (int i = 0; i < edges.size(); i++) {
  			Motion m = edges.get(i);
  			if( m.viewSrc.camera == target && m.viewDst.camera == target ) {
  				storage.add(m);
  			}
  		}
  
  		return storage;
  	}