@JsonIgnore
    @Override
    public String getDestinationDescription() {
        return subPathTemplate.hasPathTemplate()
                ? path + "/" + subPathTemplate.getPathTemplate()
                : path;
    }
The template to create subdirectories within the 'path' directory.
The default value is <code>${year}${month}${day}/${feed}</code>
Must be a relative path.
stroom-proxy/stroom-proxy-app/src/main/java/stroom/proxy/app/handler/ForwardFileConfig.java