How to open incognito/private window with Selenium WD for different browser types?

Question

I want to test my test cases in private window or incognito window.

How to do the same in various browsers:

Answer 1

FirefoxOptions opts = new FirefoxOptions();
opts.addArguments("-private");
FirefoxDrive f = new FirefoxDriver(opts);

This works fine for selenium version 3.14.0 and geckodriver-v0.22.0