{"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"///"}]}
    /// A binary operation (e.g., `a + b`, `a * b`).
    Tup(&'hir [Expr<'hir>]),
    Binary(BinOp, &'hir Expr<'hir>, &'hir Expr<'hir>),