{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"let"}]}
    let arm_match_expr = arm.syntax().ancestors().nth(2).and_then(ast::MatchExpr::cast)?;
    let arm = wild_pat.syntax().parent().and_then(ast::MatchArm::cast)?;
    if arm_match_expr == *match_expr {