code: def rendered(self):
          
          if not self._rendered:
              template_path = get_template_path(self.raw_template_path)
              if template_path:
                  with open(template_path, 'r') as template:
                      if len(os.path.splitext(template_path)) == 2 and (
                              os.path.splitext(template_path)[1] == '.j2'):
                          self._rendered = Template(template.read()).render(
                              context=self.context,
                              mappings=self.mappings,
                              name=self.name,
                              variables=self.resolved_variables
                          )
                      else:
                          self._rendered = template.read()
              else:
                  raise InvalidConfig(
                      'Could not find template %s' % self.raw_template_path
                  )
  
          return self._rendered
docs: Return (generating first if needed) rendered template.