{"ast_node_type":"variable","tokens":[{"end":68,"kind":"keyword","start":0,"text":"if"}]}
    if let mir::StatementKind::Assign(box (lhs, rhs)) = &stmt.kind {
fn as_local_assigned_to_return_place(stmt: &mir::Statement<'_>) -> Option<Local> {
        if lhs.as_local() == Some(mir::RETURN_PLACE) {