@sportsref.decorators.memoize<EOL><INDENT>def get_sub_doc(self, subpage):<DEDENT>
html = sportsref.utils.get_html(self._subpage_url(subpage))<EOL>return pq(html)<EOL>
Returns PyQuery object for a given subpage URL.
        :subpage: The subpage of the season, e.g. 'per_game'.
        :returns: PyQuery object.