public String getRecordIdentifierFeatureName() {
        return this.recordIdentifierFeatureName;
    }
<p>
The name of the <code>Feature</code> used for <code>RecordIdentifier</code>, whose value uniquely identifies a
record stored in the feature store.
</p>

@return The name of the <code>Feature</code> used for <code>RecordIdentifier</code>, whose value uniquely
        identifies a record stored in the feature store.
aws-java-sdk-sagemaker/src/main/java/com/amazonaws/services/sagemaker/model/DescribeFeatureGroupResult.java