geom_gettree_geom
error = geom_gettree_geom(&mesh, name, g, 1);
error = geom_gettree_geom(&mesh, s, g, 0);
error = geom_gettree_geom(&mesh, s, g, 1);
error = geom_gettree_geom(&mesh, s, g, 1);
error = geom_gettree_geom(&mesh, name,
error = geom_gettree_geom(&mesh, s, g, 0);
int geom_gettree_geom(struct gmesh *, const char *, const char *, int);
error = geom_gettree_geom(&mesh, gclass_name, "", 0);
error = geom_gettree_geom(&mesh, gclass_name,