@NotNull
    protected Set<DBPPropertyDescriptor> getAllProperties() {
        ObjectColumn[] columns = columnController.getColumnsData(ObjectColumn.class);
        Set<DBPPropertyDescriptor> props = new LinkedHashSet<>();
        for (ObjectColumn column : columns) {
            props.addAll(column.propMap.values());
        }
        return props;
    }
Returns object's image

@param item object
@return image or null
plugins/org.jkiss.dbeaver.ui.navigator/src/org/jkiss/dbeaver/ui/navigator/itemlist/ObjectListControl.java