public void setTransform(SummaryTransform transform) {
        this.transform = transform;
        if (SummaryTransform.DYNAMICTEASER.equals(transform) || SummaryTransform.BOLDED.equals(transform)) {
            // This is the kind of logic we want to have in processing,
            // but can't because of deriveDocuments mode, which doesn't run
            // processing.
            setVsmCommand(VsmCommand.FLATTENJUNIPER);
        }
    }
Creates a summary field with NONE as transform
config-model/src/main/java/com/yahoo/vespa/documentmodel/SummaryField.java