def _make_instance(cls, element_class, webelement):
        """
        Firefox uses another implementation of element. This method
        switch base of wrapped element to firefox one.
        """
        if isinstance(webelement, FirefoxWebElement):
            element_class = copy.deepcopy(element_class)
            element_class.__bases__ = tuple(
                FirefoxWebElement if base is WebElement else base
                for base in element_class.__bases__
            )
        return element_class(webelement)
Firefox uses another implementation of element. This method
        switch base of wrapped element to firefox one.