mtetlow

    ConnectApi.SmartDataDiscoveryPredictInputRecords input = new ConnectApi.SmartDataDiscoveryPredictInputRecords();
    input.predictionDefinition = '0ORf0000000xxxxxxx';
    input.records = new List<Id>{'a291Y000002Exxxxxxx'};

    ConnectApi.SmartDataDiscoveryPrediction request =
      ConnectApi.SmartDataDiscovery.predict(input);

    // Everything up to here so far so good
    System.debug('ConnectApi.SmartDataDiscoveryPrediction');
    System.debug(JSON.serializePretty(request));