array(3) {
  ["post_type"]=>
  string(17) "product_variation"
  ["posts_per_page"]=>
  int(-1)
  ["meta_query"]=>
  array(3) {
    ["relation"]=>
    string(3) "AND"
    [0]=>
    array(3) {
      ["key"]=>
      string(19) "attribute_qualitaet"
      ["value"]=>
      string(2) "^C"
      ["compare"]=>
      string(6) "REGEXP"
    }
    [1]=>
    array(3) {
      ["key"]=>
      string(20) "attribute_prioritaet"
      ["value"]=>
      array(3) {
        [0]=>
        string(16) "knospig-blühend"
        [1]=>
        string(13) "schönes Laub"
        [2]=>
        string(17) "schöner Austrieb"
      }
      ["compare"]=>
      string(2) "IN"
    }
  }
}