code: def clear_access(self, white_list=None):
          
          access_entries = self.get_ace_list()
          sid_list = access_entries.sid_list
  
          if white_list:
              sid_white_list = [UnityAclUser.get_sid(self._cli,
                                                     user,
                                                     self.cifs_server.domain)
                                for user in white_list]
              sid_list = list(set(sid_list) - set(sid_white_list))
  
          resp = self.delete_ace(sid=sid_list)
          resp.raise_if_err()
          return sid_list
docs: clear all ace entries of the share
  
          :param white_list: list of username whose access entry won't be cleared
          :return: sid list of ace entries removed successfully