{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"is_possibly_self.sort_unstable_by_key(|position|"}]}
            is_possibly_self.sort_unstable_by_key(|position| {
            // Impls can contain each other, so we need to deduplicate their ranges.
                (position.file_id, position.range.start(), Reverse(position.range.end()))