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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def starter(cls):
 """Return last gallery link."""

        url = 'http://www.hagardunor.net/comics.php'
        data = cls.getPage(url)
        pattern = compile(tagre("a", "href", cls.prevUrl))
        for starturl in cls.fetchUrls(url, data, pattern):
            pass
        return starturl