protected void addImpl(Component value0, Object value1, int value2) {  }
protected void addImpl(Component comp, Object constraints, int index) { int left = 0; int right = 1; int div = 2; int place; if (constraints == null) { if (leftComponent == null) constraints = LEFT; else if (rightComponent == null) constraints = RIGHT; }  if (constraints instanceof String) { String placement = (String) constraints;  if (placement.equals(BOTTOM) || placement.equals(RIGHT)) { if (rightComponent != null) remove(rightComponent); rightComponent = comp; } else if (placement.equals(LEFT) || placement.equals(TOP)) { if (leftComponent != null) remove(leftComponent); leftComponent = comp; } else if (placement.equals(DIVIDER)) constraints = null; else throw new IllegalArgumentException("Constraints is not a known identifier.");  super.addImpl(comp, constraints, index); } invalidate(); layout(); }
	protected void addImpl(Component value0, Object value1, int value2) {		// TODO	} // addImpl()