Checks any given response on being an article and if positiv,
        passes the response to the pipeline.

        :param obj response: The scrapy response

def parse(self, response):
        """
        Checks any given response on being an article and if positiv,
        passes the response to the pipeline.

        :param obj response: The scrapy response
        """
        if not self.helper.parse_crawler.content_type(response):
            return

        for request in self.helper.parse_crawler \
                .recursive_requests(response, self, self.ignore_regex,
                                    self.ignore_file_extensions):
            yield request

        yield self.helper.parse_crawler.pass_to_pipeline_if_article(
            response, self.allowed_domains[0], self.original_url)