docs: def _get_pwm_values(self, brightness=None, color=None):
          """
          Get the pwm values for a specific state of the led.
  
          If a state argument is omitted, current value is used.
  
          :param brightness: The brightness of the state.
          :param color: The color of the state.
          :return: The pwm values.
          """
          if brightness is None:
              brightness = self.brightness
          if color is None:
              color = self.color
  
          return [(x / 255) * brightness for x in self._rgb_to_rgbw(color)]