{"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"let"}]}
    let or_pat = ast::OrPat::cast(pipe_token.parent()?)?.clone_for_update();
    let pipe_token = ctx.find_token_syntax_at_offset(T![|])?;
    if or_pat.leading_pipe().is_some_and(|it| it == pipe_token) {