private Preset getDocTypeIcon(final DocRef docRef) {
        if (docRef != null && docRef.getType() != null && !docRef.getType().isEmpty()) {
            final SvgImage icon = DocumentTypeRegistry.getIcon(docRef.getType());
            if (icon != null) {
                return new Preset(icon, docRef.getType(), true);
            } else {
                return SvgPresets.ALERT.title("Unknown Document Type");
            }
        } else {
            return SvgPresets.ALERT.title("Unknown Document Type");
        }
    }
Reveal the doc in the Explorer tree
stroom-core-client/src/main/java/stroom/importexport/client/presenter/DependenciesPresenter.java