restaurantDict['menus'][menuIdx]['sections'][sectionIdx]['option_groups'][sectionOptionGroupIdx]['options'] = sectionOptionObjects

// Equivalent Python code: foo["a"]["b"]["c"] = "bar";
HashMap<String, HashMap<String, HashMap<String, String>>> foo = new HashMap<String, HashMap<String, HashMap<String, String>>>();
foo.get("a").get("b").put("c", "bar");