removeLayoutComponent(Component component) {
public void removeLayoutComponent(Component component) {
removeLayoutComponent(Component component){  if (north == component)    north = null;  if (south == component)    south = null;  if (east == component)    east = null;  if (west == component)    west = null;  if (center == component)    center = null;  if (firstItem == component)    firstItem = null;  if (lastItem == component)    lastItem = null;  if (firstLine == component)    firstLine = null;  if (lastLine == component)    lastLine = null;}