docs: private Detection lookupDetection( long found , int gridIndex) {
  		for (int i = 0; i < detections.size(); i++) {
  			Detection d = detections.get(i);
  			if( d.id == found ) {
  				return d;
  			}
  		}
  
  		Detection d = detections.grow();
  		d.reset();
  		d.id = found;
  		d.gridIndex = gridIndex;
  
  		return d;
  	}