Elegant way to access additional serial ports on Mega without hardcoding?

Projects Programming
2

Found one idea (but not sure it's the best):

Declare a private pointer to a HardwareSerial object in the class definition:

private:
		HardwareSerial *_port;

Then set it to point to the appropriate Serial object in the constructor, and then use it for all future references to the serial port:

{
	MGCFA632::MGCFA632(int serialPort0123, int baud)
			//Initialize pointer to serial object we'll be using
			switch(serialPort0123) {
				case	0 : _port=&Serial;  break;
				case	1 : _port=&Serial1; break;
				case	2 : _port=&Serial2; break;
				case	3 : _port=&Serial3; break;
		 }
			//Init port
			_port->begin(baud);

		 }

Any better ideas welcome...