{"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"let"}]}
    let pipe_token = ctx.find_token_syntax_at_offset(T![|])?;
pub(crate) fn unmerge_match_arm(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> {
    let or_pat = ast::OrPat::cast(pipe_token.parent()?)?.clone_for_update();