@staticmethod
def _get_index_parameter_text(operation, name, description):
    """
        Get a formatted string for logging document index parameters.

        :param dict operation: Dictionary containing the index operation
            parameters.
        :param str name: Name of the parameter to retrieve.
        :param str description: Text description for the parameter.
        :return: Formatted string for logging.
        :rtype: str
        """
    value = operation.get(name)
    return ', {}: {}'.format(description, value if value else '<None>')
