def METHOD_NAME(self):
    """
    Retrieves the presence of the FAN
    Returns:
        bool: True if fan is present, False if not
    """
    presence = False
    if self.is_psu_fan:
        return self.dependency.METHOD_NAME()
    else:
        is_valid, state = self.prsnt_sensor.get_reading()
        if is_valid:
            if (state & 0b1):
                presence = True
        return presence