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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 Log object from a json dictionary."""

        args = {}
        if 'request' in _dict:
            args['request'] = MessageRequest._from_dict(_dict.get('request'))
        else:
            raise ValueError(
                'Required property \'request\' not present in Log JSON')
        if 'response' in _dict:
            args['response'] = MessageResponse._from_dict(_dict.get('response'))
        else:
            raise ValueError(
                'Required property \'response\' not present in Log JSON')
        if 'log_id' in _dict:
            args['log_id'] = _dict.get('log_id')
        else:
            raise ValueError(
                'Required property \'log_id\' not present in Log JSON')
        if 'request_timestamp' in _dict:
            args['request_timestamp'] = _dict.get('request_timestamp')
        else:
            raise ValueError(
                'Required property \'request_timestamp\' not present in Log JSON'
            )
        if 'response_timestamp' in _dict:
            args['response_timestamp'] = _dict.get('response_timestamp')
        else:
            raise ValueError(
                'Required property \'response_timestamp\' not present in Log JSON'
            )
        if 'workspace_id' in _dict:
            args['workspace_id'] = _dict.get('workspace_id')
        else:
            raise ValueError(
                'Required property \'workspace_id\' not present in Log JSON')
        if 'language' in _dict:
            args['language'] = _dict.get('language')
        else:
            raise ValueError(
                'Required property \'language\' not present in Log JSON')
        return cls(**args)