{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"assert!(&vtable_entries[..vtable_entries_b.len()]"}]}
                    assert!(&vtable_entries[..vtable_entries_b.len()] == vtable_entries_b);
                    let vtable_entries_b = self.vtable_entries(data_b.principal(), ty);
                };