code: public void sendKeys(final By by, final CharSequence... keysToSend) {
  		checkTopmostElement(by);
  		findElement(by).sendKeys(keysToSend);
  	}
docs: Delegates to {@link #findElement(By)} and calls
  {@link WebElement#sendKeys(CharSequence...) sendKeys(CharSequence...)} on the returned
  element.
  
  @param by
  the {@link By} used to locate the element
  @param keysToSend
  the keys to send