public void setIsColumnVisibleById(String id, boolean visible) {
        if (columnController != null) {
            ObjectColumn[] columnsData = columnController.getColumnsData(ObjectColumn.class);
            for (int i = 0; i < columnsData.length; i++) {
                if (columnsData[i].id.equals(id)) {
                    columnController.setIsColumnVisible(i, visible);
                }
            }
        }
    }
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