docs: def get_group(name):
      """
      Return group with given name, if it exists. Check cache first.
      """
      group = cache.get('bits.general.group_%s' % name)
      if not group:
          group = Group.objects.get(name=name)
          cache.set('bits.general.group_%s' % name, group, 365 * 24 * 60 * 60)
      return group