Use of the restart() function is not documented

[cwkhawand]

On the arduino documentation page for MKRWAN, the example on the restart() function's page does not contain the restart() function:

MKRWAN/docs/api.md

Lines 131 to 241 in daf8d55

	### `restart()`
	#### Description
	Restarts the LoRaWAN module
	#### Syntax
	```
	modem.restart();
	```
	#### Parameters
	None
	#### Example
	```
	/*
	Lora Send And Receive
	This sketch demonstrates how to send and receive data with the MKR WAN 1300/1310 LoRa module.
	This example code is in the public domain.
	*/
	#include <MKRWAN.h>
	LoRaModem modem;
	// Uncomment if using the Murata chip as a module
	// LoRaModem modem(Serial1);
	#include "arduino_secrets.h"
	// Please enter your sensitive data in the Secret tab or arduino_secrets.h
	String appEui = SECRET_APP_EUI;
	String appKey = SECRET_APP_KEY;
	void setup() {
	// put your setup code here, to run once:
	Serial.begin(115200);
	while (!Serial);
	// change this to your regional band (eg. US915, AS923, ...)
	if (!modem.begin(EU868)) {
	Serial.println("Failed to start module");
	while (1) {}
	};
	Serial.print("Your module version is: ");
	Serial.println(modem.version());
	Serial.print("Your device EUI is: ");
	Serial.println(modem.deviceEUI());
	int connected = modem.joinOTAA(appEui, appKey);
	if (!connected) {
	Serial.println("Something went wrong; are you indoor? Move near a window and retry");
	while (1) {}
	}
	// Set poll interval to 60 secs.
	modem.minPollInterval(60);
	// NOTE: independent of this setting, the modem will
	// not allow sending more than one message every 2 minutes,
	// this is enforced by firmware and can not be changed.
	}
	void loop() {
	Serial.println();
	Serial.println("Enter a message to send to network");
	Serial.println("(make sure that end-of-line 'NL' is enabled)");
	while (!Serial.available());
	String msg = Serial.readStringUntil('\n');
	Serial.println();
	Serial.print("Sending: " + msg + " - ");
	for (unsigned int i = 0; i < msg.length(); i++) {
	Serial.print(msg[i] >> 4, HEX);
	Serial.print(msg[i] & 0xF, HEX);
	Serial.print(" ");
	}
	Serial.println();
	int err;
	modem.beginPacket();
	modem.print(msg);
	err = modem.endPacket(true);
	if (err > 0) {
	Serial.println("Message sent correctly!");
	} else {
	Serial.println("Error sending message :(");
	Serial.println("(you may send a limited amount of messages per minute, depending on the signal strength");
	Serial.println("it may vary from 1 message every couple of seconds to 1 message every minute)");
	}
	delay(1000);
	if (!modem.available()) {
	Serial.println("No downlink message received at this time.");
	return;
	}
	char rcv[64];
	int i = 0;
	while (modem.available()) {
	rcv[i++] = (char)modem.read();
	}
	Serial.print("Received: ");
	for (unsigned int j = 0; j < i; j++) {
	Serial.print(rcv[j] >> 4, HEX);
	Serial.print(rcv[j] & 0xF, HEX);
	Serial.print(" ");
	}
	Serial.println();
	}
	```

Do we need to call modem.begin() again after doing modem.restart()?