private static String getStringValue(final String value) {
        if (value == null || value.isEmpty() || value.isBlank()) {
            return null;
        } else {
            return value;
        }
    }
This will modify the content of the file
{@code [this repo]/../stroom-docs/layouts/shortcodes/pipe-elm.html}
stroom-app/src/test/java/stroom/app/docs/GeneratePipelineElementsDoc.java