public java.util.List<Field> getManagedFields() {
        return managedFields;
    }
<p>
Contains fields that are indexed and whose types are already known by the Fleet Indexing service. This is an
optional field. For more information, see <a
href="https://docs.aws.amazon.com/iot/latest/developerguide/managing-fleet-index.html#managed-field">Managed
fields</a> in the <i>Amazon Web Services IoT Core Developer Guide</i>.
</p>
<note>
<p>
You can't modify managed fields by updating fleet indexing configuration.
</p>
</note>

@return Contains fields that are indexed and whose types are already known by the Fleet Indexing service. This is
        an optional field. For more information, see <a
        href="https://docs.aws.amazon.com/iot/latest/developerguide/managing-fleet-index.html#managed-field"
        >Managed fields</a> in the <i>Amazon Web Services IoT Core Developer Guide</i>.</p> <note>
        <p>
        You can't modify managed fields by updating fleet indexing configuration.
        </p>
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/ThingIndexingConfiguration.java