public void setCustomFields(java.util.Collection<Field> customFields) {
        if (customFields == null) {
            this.customFields = null;
            return;
        }

        this.customFields = new java.util.ArrayList<Field>(customFields);
    }
<p>
Contains custom field names and their data type.
</p>

@param customFields
       Contains custom field names and their data type.
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/ThingIndexingConfiguration.java