docs: def get_queue_acl(self, queue_name, timeout=None):
          '''
          Returns details about any stored access policies specified on the
          queue that may be used with Shared Access Signatures.
  
          :param str queue_name:
              The name of an existing queue.
          :param int timeout:
              The server timeout, expressed in seconds.
          :return: A dictionary of access policies associated with the queue.
          :rtype: dict of str to :class:`~azure.storage.models.AccessPolicy`
          '''
          _validate_not_none('queue_name', queue_name)
          request = HTTPRequest()
          request.method = 'GET'
          request.host = self._get_host()
          request.path = _get_path(queue_name)
          request.query = [
              ('comp', 'acl'),
              ('timeout', _int_to_str(timeout)),
          ]
          response = self._perform_request(request)
  
          return _convert_xml_to_signed_identifiers(response.body)