2340     PyObject *element_factory;  member
2375         t->element_factory = NULL;  in treebuilder_new()
2410                                        PyObject *element_factory,  in _elementtree_TreeBuilder___init___impl()  argument
2416     if (element_factory != Py_None) {  in _elementtree_TreeBuilder___init___impl()
2417         Py_INCREF(element_factory);  in _elementtree_TreeBuilder___init___impl()
2418         Py_XSETREF(self->element_factory, element_factory);  in _elementtree_TreeBuilder___init___impl()
2420         Py_CLEAR(self->element_factory);  in _elementtree_TreeBuilder___init___impl()
2470     Py_VISIT(self->element_factory);  in treebuilder_gc_traverse()
2491     Py_CLEAR(self->element_factory);  in treebuilder_gc_clear()
2686     if (!self->element_factory) {  in treebuilder_handle_start()
2692         node = PyObject_CallFunctionObjArgs(self->element_factory,  in treebuilder_handle_start()
2697         node = PyObject_CallFunctionObjArgs(self->element_factory,  in treebuilder_handle_start()