A block section of code to be used as substitutions

        :param section: A block section of code to be used as substitutions
        :type section: Section

def add_section(self, section):
        """A block section of code to be used as substitutions

        :param section: A block section of code to be used as substitutions
        :type section: Section
        """
        self._sections = self._ensure_append(section, self._sections)