public static interface RetrievalDetails.DocumentRetrievalStrategy
**Note**: In the event of trained collections being queried, but the trained model is not used to return results, the **document_retrieval_strategy** will be listed as `untrained`.
| Modifier and Type | Field and Description | 
|---|---|
| static java.lang.String | RELEVANCY_TRAININGrelevancy_training. | 
| static java.lang.String | UNTRAINEDuntrained. | 
static final java.lang.String UNTRAINED
static final java.lang.String RELEVANCY_TRAINING