Switches focus to the specified window.

        :Args:
         - window_name: The name or window handle of the window to switch to.

        :Usage:
            ::

                driver.switch_to.window('main')

def window(self, window_name):
        """
        Switches focus to the specified window.

        :Args:
         - window_name: The name or window handle of the window to switch to.

        :Usage:
            ::

                driver.switch_to.window('main')
        """
        if self._driver.w3c:
            self._w3c_window(window_name)
            return
        data = {'name': window_name}
        self._driver.execute(Command.SWITCH_TO_WINDOW, data)