{"ast_node_type":"variable","tokens":[{"end":90,"kind":"keyword","start":0,"text":"let"}]}
        let len_statement_kind = StatementKind::Assign(Box::new((*destination, r_value)));
        let r_value = Rvalue::UnaryOp(UnOp::PtrMetadata, arg.node.clone());
        let add_statement = Statement::new(terminator.source_info, len_statement_kind);