// "page 2"
driver.findElement(By.xpath("//div[text() = 'Search']")).click();
driver.findElement(By.cssSelector(".tweet")); // wait for next page & tweets to appear
// write the har file out
new PerformanceTiming(driver, proxy.getHar());
proxy.getHar().writeTo(new File("/tmp/twitter.com.har"));
driver.close();
}