array(2) {
  ["keys"]=>
  array(5) {
    [0]=>
    string(6) "status"
    [1]=>
    string(7) "headers"
    [2]=>
    string(7) "content"
    [3]=>
    string(4) "etag"
    [4]=>
    string(12) "lastModified"
  }
  ["data_type"]=>
  string(5) "array"
}