def sign_in(self, email, password):
        """Signs in using the specified email address and password."""
        self.email = email
        self.login_password = password
        if self.is_element_present(*self._next_button_locator):
            self.wait.until(expected.visibility_of_element_located(
                self._next_button_locator))
            self.click_next()
        self.click_sign_in()
Signs in using the specified email address and password.