code: def get_packagers_of_package(config, package):
      
  
      if not _cache.is_configured:
          _cache.configure(**config['fmn.rules.cache'])
  
      key = cache_key_generator(get_packagers_of_package, package)
      creator = lambda: _get_pkgdb2_packagers_for(config, package)
      return _cache.get_or_create(key, creator)
docs: Retrieve the list of users who have commit on a package.
  
      :arg config: a dict containing the fedmsg config
      :arg package: the package you are interested in.
      :return: a set listing all the fas usernames that have some ACL on package.