Nest::setDualFuelBreakpoint PHP Method

    public function setDualFuelBreakpoint($breakpoint, $serial_number = null)
    {
        $serial_number = $this->getDefaultSerial($serial_number);
        if (!is_string($breakpoint)) {
            $breakpoint = $this->temperatureInCelsius($breakpoint, $serial_number);
            $data = json_encode(array('dual_fuel_breakpoint_override' => 'none', 'dual_fuel_breakpoint' => $breakpoint));
        } else {
            $data = json_encode(array('dual_fuel_breakpoint_override' => $breakpoint));
        }
        return $this->doPOST("/v2/put/device." . $serial_number, $data);
    }

$success = $nest->setFanEveryDaySchedule(5, 22);
// Send 0,0 to run all day long
var_dump($success);
echo "Turning system off...\n";
$success = $nest->turnOff();
var_dump($success);
echo "Setting away mode...\n";
$success = $nest->setAway(AWAY_MODE_ON);
// Available: AWAY_MODE_ON, AWAY_MODE_OFF
var_dump($success);
echo "Enabling (Nest Sense) Auto-Away...\n";
$success = $nest->setAutoAwayEnabled(true);
var_dump($success);
echo "Setting dual-fuel breakpoint (use alternative heat when the outdoor temperature is below -5°)...\n";
// Note: when using temperatures, it will use the units you set on the device. I'm using celsius on my device, so I'm using celsius here.
$success = $nest->setDualFuelBreakpoint(-5);
// Available: DUALFUEL_BREAKPOINT_ALWAYS_PRIMARY, DUALFUEL_BREAKPOINT_ALWAYS_ALT, or a temperature between -12°C and 9°C (10-50°F)
var_dump($success);
echo "----------\n\n";
sleep(1);
echo "Device information:\n";
$infos = $nest->getDeviceInfo();
jlog($infos);
echo "----------\n\n";
echo "Device schedule:\n";
// Returns as array, one element for each day of the week for which there has at least one scheduled event.
// Array keys are a textual representation of a day, three letters, as returned by `date('D')`. Array values are arrays of scheduled temperatures, including a time (in minutes after midnight), and a mode (one of the TARGET_TEMP_MODE_* defines).
$schedule = $nest->getDeviceSchedule();
jlog($schedule);
echo "----------\n\n";
echo "Device next scheduled event:\n";