How to use the pibooth.language.get_translated_text function in pibooth

def preview_wait(self, timeout, alpha=60):
        """Wait the given time.
        """
        time.sleep(timeout)
        self._show_overlay(get_translated_text('smile'), alpha)

def preview_wait(self, timeout, alpha=80):
        """Wait the given time.
        """
        timeout = int(timeout)
        if timeout < 1:
            raise ValueError("Start time shall be greater than 0")

        timer = PoolingTimer(timeout)
        while not timer.is_timeout():
            updated_rect = self._window.show_image(self._get_preview_image())
            pygame.event.pump()
            if updated_rect:
                pygame.display.update(updated_rect)

        self._show_overlay(get_translated_text('smile'), alpha)
        self._window.show_image(self._get_preview_image())

def preview_wait(self, timeout, alpha=60):
        """Wait the given time.
        """
        time.sleep(timeout)
        self._show_overlay(get_translated_text('smile'), alpha)

updated_rect = None
            if self._preview_compatible:
                updated_rect = self._window.show_image(self._get_preview_image())
            elif not shown:
                updated_rect = self._window.show_image(self._get_preview_image())
                shown = True  # Do not update dummy preview until next overlay update

            if first_loop:
                timer.start()  # Because first preview capture is longer than others
                first_loop = False

            pygame.event.pump()
            if updated_rect:
                pygame.display.update(updated_rect)

        self._show_overlay(get_translated_text('smile'), alpha)
        self._window.show_image(self._get_preview_image())

def resize_texts(self, rect=None, align='center'):
        """Update text surfaces.
        """
        self._texts = []
        text = get_translated_text(self._name)
        if text:
            self._write_text(text, rect, align)

"""Show a countdown of `timeout` seconds on the preview.
        Returns when the countdown is finished.
        """
        timeout = int(timeout)
        if timeout < 1:
            raise ValueError("Start time shall be greater than 0")
        if not self._cam.preview:
            raise EnvironmentError("Preview shall be started first")

        while timeout > 0:
            self._show_overlay(timeout, alpha)
            time.sleep(1)
            timeout -= 1
            self._hide_overlay()

        self._show_overlay(get_translated_text('smile'), alpha)

"""
        timeout = int(timeout)
        if timeout < 1:
            raise ValueError("Start time shall be greater than 0")

        timer = PoolingTimer(timeout)
        if self._preview_compatible:
            while not timer.is_timeout():
                updated_rect = self._window.show_image(self._get_preview_image())
                pygame.event.pump()
                if updated_rect:
                    pygame.display.update(updated_rect)
        else:
            time.sleep(timer.remaining())

        self._show_overlay(get_translated_text('smile'), alpha)
        self._window.show_image(self._get_preview_image())