scheduleChange(new Change(parent.getCellID(), child.getCellID()) {
public void run() {
if (logger.isLoggable(Level.FINE))
logger.log(Level.FINE, "RUN addChild");
SpatialCell parent = universe.getSpatialCell(cellID);
parent.addChild(universe.getSpatialCell(childCellID), identity);
}
});
}