Deprecated: Return type of YDataTable::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/bdavid/prod/georef/yamldoc/ydclasses/ydata.inc.php on line 428

Deprecated: Return type of YamlDataTable::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/bdavid/prod/georef/yamldoc/ydclasses/yamldata.inc.php on line 295
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dump session server cookie 
var_dump /eurovoc /concepts/4420

object(Concept)#4813 (1) {
  ["_c":protected]=>
  array(7) {
    ["inScheme"]=>
    array(2) {
      [0]=>
      int(100141)
      [1]=>
      int(100263)
    }
    ["prefLabel"]=>
    object(MLString)#4814 (1) {
      ["_c":protected]=>
      array(2) {
        ["en"]=>
        array(1) {
          [0]=>
          string(17) "energy technology"
        }
        ["fr"]=>
        array(1) {
          [0]=>
          string(25) "technologie énergétique"
        }
      }
    }
    ["altLabel"]=>
    object(MLString)#4815 (1) {
      ["_c":protected]=>
      array(1) {
        ["fr"]=>
        array(1) {
          [0]=>
          string(23) "technique énergétique"
        }
      }
    }
    ["broader"]=>
    array(1) {
      [0]=>
      int(3737)
    }
    ["narrower"]=>
    array(1) {
      [0]=>
      int(2382)
    }
    ["related"]=>
    array(3) {
      [0]=>
      int(4423)
      [1]=>
      int(2498)
      [2]=>
      int(744)
    }
    ["notation"]=>
    array(1) {
      [0]=>
      int(4420)
    }
  }
}