How to use the pycountry.languages._is_loaded function in pycountry

def execute(self, maybe_code):
        # Force indices to populate
        if not languages._is_loaded:
            languages._load()

        for kwarg in languages.indices.keys():
            try:
                return languages.get(**{kwarg: maybe_code}).iso639_3_code
            except KeyError:
                continue
        return None

def execute(self, maybe_code):
        if isinstance(maybe_code, dict):
            maybe_code = maybe_code['#text']
        # Force indices to populate
        if not languages._is_loaded:
            languages._load()

        for kwarg in languages.indices.keys():
            try:
                return languages.get(**{kwarg: maybe_code}).iso639_3_code
            except KeyError:
                continue
        return None

def execute(self, maybe_code):
        if isinstance(maybe_code, dict):
            maybe_code = maybe_code['#text']
        # Force indices to populate
        if not languages._is_loaded:
            languages._load()

        for kwarg in languages.indices.keys():
            try:
                return languages.get(**{kwarg: maybe_code}).iso639_3_code
            except KeyError:
                continue
        return None