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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 RuntimeIntent object from a json dictionary."""

        args = {}
        xtra = _dict.copy()
        if 'intent' in _dict:
            args['intent'] = _dict.get('intent')
            del xtra['intent']
        else:
            raise ValueError(
                'Required property \'intent\' not present in RuntimeIntent JSON'
            )
        if 'confidence' in _dict:
            args['confidence'] = _dict.get('confidence')
            del xtra['confidence']
        else:
            raise ValueError(
                'Required property \'confidence\' not present in RuntimeIntent JSON'
            )
        args.update(xtra)
        return cls(**args)