{"ast_node_type":"variable","tokens":[{"end":90,"kind":"keyword","start":0,"text":"let"}]}
                        let &(&impl2_def_id, impl_items2) = &impls_items[impl2_items_idx];
                    for &impl2_items_idx in impl_blocks[(i + 1)..].iter() {
                        if self.impls_have_common_items(impl_items1, impl_items2) {