docs: def get_summary(self, s, base=None):
          """
          Get the summary of the given docstring
  
          This method extracts the summary from the given docstring `s` which is
          basicly the part until two newlines appear
  
          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'``. Otherwise, it will not be stored at all
  
          Returns
          -------
          str
              The extracted summary"""
          summary = summary_patt.search(s).group()
          if base is not None:
              self.params[base + '.summary'] = summary
          return summary