(VikDataSourceCheckExistenceFunc) NULL,
(VikDataSourceAddSetupWidgetsFunc) datasource_osm_add_setup_widgets,
(VikDataSourceGetCmdStringFunc) datasource_osm_get_cmd_string,
(VikDataSourceCheckExistenceFunc) NULL,
(VikDataSourceAddSetupWidgetsFunc) datasource_osm_add_setup_widgets,
(VikDataSourceGetCmdStringFunc) datasource_osm_get_cmd_string,