def update(self, content=None):
        """
        Update values based on the requested content

        Parameters
        ----------
        content

        Returns
        -------

        """
        if not content:
            return
        if content == 'summary' or 'extended' or 'powerflow':
            self._update_summary(self.system)
        if content == 'extended' or 'powerflow':
            self._update_extended(self.system)
Update values based on the requested content

        Parameters
        ----------
        content

        Returns
        -------