if(osName.contains("Mac")){
    new Actions(tester.getInternalDriver()).keyDown(Keys.COMMAND).keyDown(Keys.SHIFT).sendKeys("P").keyUp(Keys.COMMAND).keyUp(Keys.SHIFT).build().perform();
}
else if (osName.contains("Win") || osName.contains("nux")){
    String pvtWin = Keys.chord(Keys.LEFT_CONTROL,Keys.SHIFT,"p");
     tester.getInternalDriver().findElement(By.cssSelector("body")).sendKeys(pvtWin);
}