WebElement caching?

test.java

import org.junit.Before;
import org.junit.Test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;

/**
 * @author ddavison
 * @since Mar 18, 2015
 */
public class TestSelenium {
    private ChromeDriver driver = null;

    @Before
    public void before() {
        System.setProperty("webdriver.chrome.driver", "chromedriver");
        driver = new ChromeDriver();
    }

    @Test
    public void testAttribute() {
        driver.get("http://ddavison.io/tests/getting-started-with-selenium.htm");

        WebElement box = driver.findElement(By.id("click"));
        System.out.println("class: " + box.getAttribute("class")); // class: box

        box.click();
        System.out.println("class: " + box.getAttribute("class")); // class: box success
        // therefore, it *is* polling dom again. i.e, it's not caching it.
    }
}