Scrolls down to get the next set of images

def _page_scroll_down(self):
        """Scrolls down to get the next set of images"""

        # Scroll down to request the next set of images
        self._chromeDriver.execute_script(
            'window.scroll(0, document.body.clientHeight)')

        # Wait for the images to load completely
        time.sleep(self.WAIT_TIME)

        # Check if the button - 'Show More Results' is visible
        # If yes, click it and request more messages
        # This step helps is avoiding duplicate image URLS from being captured
        try:
            self._chromeDriver.find_element_by_id('smb').click()
        except ElementNotVisibleException as error:
            pass