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