A new multilingual news agency appeared in the news agency platforms; Where The agency only creates a news article in any language, then the created article will be translated automatically into four languages (Arabic, English, Turkish, and Dutch) by using a visitor design pattern. In each language, if the article is written in the same language, no translation needs to apply). There is a subscribers list for each language, and the translated articles are pushed to each subscriber in the list automatically by using an observer design pattern. - Build a class diagram for this problem? [2 points] - Implement your work in java? [8 points]