title: Image (not element) visibility with WebDriver
body: <p>I have a clickable image and it is not visible in FireFox. I mean, there is no image, but is there is an element (and it is clickable). <strong>FindElement(by).Displayed</strong> returns true but there is still no image.
  The question is how can I check, is this image visible?</p>
  
  <p>Also, I found an error in html headers (the reason, why image is not visible), maybe there is a way to check image presence using html headers?</p>
  
  <pre><code>public bool IsFileIconDisplayed()
          {
              return IsElementDisplayed(By.XPath("//*[@class='SomeClass']/img"));
  
          }
  
  protected bool IsElementDisplayed(By by)
          {
              return FindElement(by).Displayed;
          }
  </code></pre>