why is transform and restore in a test and not in core lib?

[nickdesaulniers]

node-nanomsg/test/transform.js

Lines 10 to 17 in 1620d3b

	nano.Socket.prototype.transform = function (buf) {
	if (!Buffer.isBuffer(buf)) buf = new Buffer(buf);
	return Buffer.concat([new Buffer([0x00]), buf]);
	}
	nano.Socket.prototype.restore = function (buf) {
	return Buffer.concat([new Buffer([0xFF]), buf]);
	}

@tcr ?