def METHOD_NAME(self):
    """
    Retrieves the direction of fan
    Returns:
        A string, either FAN_DIRECTION_INTAKE or FAN_DIRECTION_EXHAUST
        depending on fan direction
    """
    attr_rv = self.__get_attr_value(self.fan_direction_attr)
    if attr_rv == '2':
        return self.FAN_DIRECTION_INTAKE
    else:
        return self.FAN_DIRECTION_EXHAUST