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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:
 async def get_config(self):
 """Return the configuration settings for this model. :returns: A ``dict`` mapping keys to `ConfigValue` instances, which have `source` and `value` attributes. """

        config_facade = client.ModelConfigFacade.from_connection(
            self.connection()
        )
        result = await config_facade.ModelGet()
        config = result.config
        for key, value in config.items():
            config[key] = ConfigValue.from_json(value)
        return config