boolean addEnabled = len < 8 && this instanceof IParented && !thisExists;
for(int i = 0; i < len + (addEnabled ? 1 : 0); i++) {
boolean isAdd = i == bookmarks.size();
GuiLexicon gui = isAdd ? null : bookmarks.get(i);
buttonList.add(new GuiButtonBookmark(BOOKMARK_START + i, left + 138, top + 18 + 14 * i, gui == null ? this : gui, gui == null ? "+" : gui.getTitle()));
}
}