Click element identified by `locator`.

        Key attributes for arbitrary elements are `index` and `name`. See
        `introduction` for details about locating elements.

def click_element(self, locator):
        """Click element identified by `locator`.

        Key attributes for arbitrary elements are `index` and `name`. See
        `introduction` for details about locating elements.
        """
        self._info("Clicking element '%s'." % locator)
        self._element_find(locator, True, True).click()