code: def _get_template_text_from_package(self, template_name):
      
      if self._package_name is None:
        raise self.MustacheError('No package specified for template loading.')
  
      path = os.path.join('templates', template_name + '.mustache')
      template_text = pkgutil.get_data(self._package_name, path)
      if template_text is None:
        raise self.MustacheError(
          'could not find template {} in package {}'.format(path, self._package_name))
      return template_text.decode('utf8')
docs: Load the named template embedded in our package.