Get the context(description) of this task

def get_context(self, language):
        """ Get the context(description) of this task """
        context = self.gettext(language, self._context) if self._context else ""
        vals = self._hook_manager.call_hook('task_context', course=self.get_course(), task=self, default=context)
        return ParsableText(vals[0], "rst", self._translations.get(language, gettext.NullTranslations())) if len(vals) \
            else ParsableText(context, "rst", self._translations.get(language, gettext.NullTranslations()))