text: Array spread
  -----
  <?php
  $items = [
  ...$value
  ];
  -----
  $array = $stmts[0]->expr->expr;
  $array->items[] = new Expr\ArrayItem(new Expr\Variable('b'));
  -----
  <?php
  $items = [
  ...$value, $b
  ];
  -----
  <?php
  $items =
  [
  ... $value
  ];
  -----
  $array = $stmts[0]->expr->expr;
  $array->items[] = new Expr\ArrayItem(new Expr\Variable('c'), null, false, [], true);
  -----
  <?php
  $items =
  [
  ... $value, ...$c
  ];