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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 get_album(self):
 """Returns the album object of this track."""


        doc = self._request(self.ws_prefix + ".getInfo", True)

        albums = doc.getElementsByTagName("album")

        if len(albums) == 0:
            return

        node = doc.getElementsByTagName("album")[0]
        return Album(_extract(node, "artist"), _extract(node, "title"), self.network)