Iterates over each article_candidate and cleans every extracted data.

        :param list_article_candidates: A list, the list of ArticleCandidate-Objects which have been extracted
        :return: A list, the list with the cleaned ArticleCandidate-Objects

def clean(self, list_article_candidates):
        """Iterates over each article_candidate and cleans every extracted data.

        :param list_article_candidates: A list, the list of ArticleCandidate-Objects which have been extracted
        :return: A list, the list with the cleaned ArticleCandidate-Objects
        """
        # Save cleaned article_candidates in results.
        results = []

        for article_candidate in list_article_candidates:
            article_candidate.title = self.do_cleaning(article_candidate.title)
            article_candidate.description = self.do_cleaning(article_candidate.description)
            article_candidate.text = self.do_cleaning(article_candidate.text)
            article_candidate.topimage = self.do_cleaning(article_candidate.topimage)
            article_candidate.author = self.do_cleaning(article_candidate.author)
            article_candidate.publish_date = self.do_cleaning(article_candidate.publish_date)

            results.append(article_candidate)

        return results