Initialize a TranslationModels object from a json dictionary.

def _from_dict(cls, _dict):
        """Initialize a TranslationModels object from a json dictionary."""
        args = {}
        if 'models' in _dict:
            args['models'] = [
                TranslationModel._from_dict(x) for x in (_dict.get('models'))
            ]
        else:
            raise ValueError(
                'Required property \'models\' not present in TranslationModels JSON'
            )
        return cls(**args)