# add an origin
aSession.startOperation()
aFeature = aDocument.addFeature("Point")
-aFeature.string("creation_method").setValue("by_xyz")
+# aFeature.string("creation_method").setValue("by_xyz")
aFeature.real("x").setValue(0.)
aFeature.real("y").setValue(0.)
aFeature.real("z").setValue(0.)