def get_extended_summary(self, s, base=None):
        """Get the extended summary from a docstring

        This here is the extended summary

        Parameters
        ----------
        s: str
            The docstring to use
        base: str or None
            A key under which the summary shall be stored in the :attr:`params`
            attribute. If not None, the summary will be stored in
            ``base + '.summary_ext'``. Otherwise, it will not be stored at
            all

        Returns
        -------
        str
            The extracted extended summary"""
        # Remove the summary and dedent
        s = self._remove_summary(s)
        ret = ''
        if not self._all_sections_patt.match(s):
            m = self._extended_summary_patt.match(s)
            if m is not None:
                ret = m.group().strip()
        if base is not None:
            self.params[base + '.summary_ext'] = ret
        return ret
Get the extended summary from a docstring

        This here is the extended summary

        Parameters
        ----------
        s: str
            The docstring to use
        base: str or None
            A key under which the summary shall be stored in the :attr:`params`
            attribute. If not None, the summary will be stored in
            ``base + '.summary_ext'``. Otherwise, it will not be stored at
            all

        Returns
        -------
        str
            The extracted extended summary