docs: protected void setToRootNodeNewID( GrowQueue_I32 regionMemberCount ) {
  
  		tmpMemberCount.reset();
  
  		for( int i = 0; i < mergeList.size; i++ ) {
  			int p = mergeList.data[i];
  
  			if( p == i ) {
  				mergeList.data[i] = rootID.data[i];
  				tmpMemberCount.add( regionMemberCount.data[i] );
  			} else {
  				mergeList.data[i] = rootID.data[mergeList.data[i]];
  			}
  		}
  
  		regionMemberCount.reset();
  		regionMemberCount.addAll(tmpMemberCount);
  	}