{"ast_node_type":"variable","tokens":[{"end":74,"kind":"keyword","start":0,"text":"let"}]}
        let has_single_subtree_that_is_not_self = |u: &ast::UseTreeList| {
        // `use x::{self};` are necessary and so we should not remove them.
            if let Some((single_subtree,)) = u.use_trees().collect_tuple() {