private TreeItem addOsmOptions() {
TreeItem osm = new TreeItem(tree, SWT.NONE);
osm.setText(OSMSource.NAME);
OSMControl osmControlFactory = new OSMControl();
addWMTSourceToTree(osm, OSMMapnikSource.class, osmControlFactory);
addWMTSourceToTree(osm, OSMOsmarenderSource.class, osmControlFactory);
addWMTSourceToTree(osm, OSMCycleMapSource.class, osmControlFactory);
OSMCloudMadeControl osmCloudMadeControlFactory = new OSMCloudMadeControl();