{"ast_node_type":"variable","tokens":[{"end":51,"kind":"keyword","start":0,"text":"let"}]}
    let v: i32 = *_0;           // deref, no parens
    let ($0_0, _1, _2, _3, s4, _5) = &(0, (1,"1"), Some(2), [3;3], S4 { value: 4 }, &5);
    let v: &i32 = _0;         // no deref, no parens, remove `&`