{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"assoc_items.filter_by_name_unhygienic(sym::iter_mut).peekable()"}]}
                            assoc_items.filter_by_name_unhygienic(sym::iter_mut).peekable()
                        .map(|assoc_items| {
                        });