{"ast_node_type":"variable","tokens":[{"end":65,"kind":"keyword","start":0,"text":"let"}]}
        let (origin_expr, ty_span) = match (decl.ty, decl.init) {
        // Does the expected pattern type originate from an expression and what is the span?
            (Some(ty), _) => (None, Some(ty.span)), // Bias towards the explicit user type.