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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_translated_fields_serializer(shared_model, meta=None, related_name=None, **fields):
 """ Create a Rest Framework serializer class for a translated fields model. :param shared_model: The shared model. :type shared_model: :class:`parler.models.TranslatableModel` """

    if not related_name:
        translated_model = shared_model._parler_meta.root_model
    else:
        translated_model = shared_model._parler_meta[related_name].model

    # Define inner Meta class
    if not meta:
        meta = {}
    meta['model'] = translated_model
    meta.setdefault('fields', ['language_code'] + translated_model.get_translated_fields())

    # Define serialize class attributes
    attrs = {}
    attrs.update(fields)
    attrs['Meta'] = type('Meta', (), meta)

    # Dynamically create the serializer class
    return type('{0}Serializer'.format(translated_model.__name__), (serializers.ModelSerializer,), attrs)