Serial.begin(speed, config) not compiling for Leonardo Board - arduino

Question

I would like to configure my serial communication to have no parity, 1 start- and 2 stop-bits. The documentation for Serial.begin(speed, config) states:
(...) An optional second argument configures the data, parity, and stop bits. The default is 8 data bits, no parity, one stop bit.
The documentation also lists the possible configuration-values. According to my (limited) understanding, I need SERIAL_7N2 or SERIAL_8N2 to meet my requirements. (I'm not sure how the data-bits relate to the the 1-start-bit that I need.)
However, I can't even compile because I have no idea how to supply that configuration value to the begin method. (I don't have much Arduino/C++ experience).
In my code, I've tried the following two variants:
Serial.begin(9600, SERIAL_8N2);
Serial.begin(9600, "SERIAL_8N2");
Am I missing something?
Additional information:
Serial.begin(speed, config) has been introduced with the latest Arduino 1.0.2 IDE version.
The code defining/implementing the begin methods can be found:
HardwareSerial.h
HardwareSerial.cpp
Edit:
According to the replies from PeterJ and borges, the following variant is correct.
Serial.begin(9600, SERIAL_8N2);
However, it's still not working.
I found that the compile error doesn't occur if I change the configured board from my Arduino Leonardo to Arduino Uno.
Therefore, it could be a bug occurring only with a subset of boards ... or maybe it's not supported?!
Edit 2:
It's now solved :) The answer of borges pointed me to the right solution!

Answer 1

You mentioned in a comment: (edit: and now is in the title)
I don't get the compile error if I change the board from my "Arduino Leonardo" to "Arduino Uno".
The Arduino Leonardo has some peculiarities regarding serial communication:
Leonardo has a microcontroller (ATmega32U4) that has native USB communication. To maintain compatibility as the entire ecosystem already established, the Leonardo virtualizes a serial communication over USB. You have access to this communication using Serial in the code. Physically you have access to that communication via the USB plug.
To use the "real" serial communication (AKA serial TTL), you need to use pins 0 (RX) and 1 (TX). In the code you would use Serial1 (notice the number 1!).
An example:
void setup() {
Serial1.begin(9600, SERIAL_8N2);
Serial1.println("Hello?");
}
void loop() {
}
For more information (recommended):
Arduino Leonardo
Guide to the Arduino Leonardo

Answer 2

The first method should be OK, so you have a compiler configuration or include problem. Make sure you have the following include at the top of your file:
#include <HardwareSerial.h>
Also while SERIAL_8N2 is valid it's an odd setting rarely used. You'll most likely want SERIAL_8N1.