def __init__(self, key: str):
        """
        Initialize a I18nData object.

        Args:
            key: The translation key to be translated in the frontend.
        """
        self.key = key
        self._type = "translation_metadata"

        Initialize a I18nData object.

        Args:
            key: The translation key to be translated in the frontend.
        
gradio/i18n.py