def __len__(self):
        return self._page.paginator.num_pages
Visits ClassDef nodes in a tree.  Adds relevant data about them to symbols.
dataset/ETHPy150Open shtalinberg/django-el-pagination/el_pagination/models.py/PageList.__len__--crossover with--dataset/ETHPy150Open earwig/bitshift/bitshift/parser/python.py/_TreeWalker.visit_ClassDef