{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"for"}]}
                for (i, &impl1_items_idx) in impl_blocks.iter().enumerate() {
                let impl_blocks = region.impl_blocks.into_iter().collect::<SmallVec<[usize; 8]>>();
                    let &(&impl1_def_id, impl_items1) = &impls_items[impl1_items_idx];