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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 _from_dict(cls, _dict):
 """Initialize a RecognitionJob object from a json dictionary."""

        args = {}
        if 'id' in _dict:
            args['id'] = _dict.get('id')
        else:
            raise ValueError(
                'Required property \'id\' not present in RecognitionJob JSON')
        if 'status' in _dict:
            args['status'] = _dict.get('status')
        else:
            raise ValueError(
                'Required property \'status\' not present in RecognitionJob JSON'
            )
        if 'created' in _dict:
            args['created'] = _dict.get('created')
        else:
            raise ValueError(
                'Required property \'created\' not present in RecognitionJob JSON'
            )
        if 'updated' in _dict:
            args['updated'] = _dict.get('updated')
        if 'url' in _dict:
            args['url'] = _dict.get('url')
        if 'user_token' in _dict:
            args['user_token'] = _dict.get('user_token')
        if 'results' in _dict:
            args['results'] = [
                SpeechRecognitionResults._from_dict(x)
                for x in (_dict.get('results'))
            ]
        if 'warnings' in _dict:
            args['warnings'] = _dict.get('warnings')
        return cls(**args)