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Derived Collections
You can create custom collection classes by extending the
Doctrine\Common\Collections\ArrayCollection class. If the
__construct semantics are different from the default ArrayCollection
you can override the createFrom method:
final class DerivedArrayCollection extends ArrayCollection{ /** @var \stdClass */ private $foo; public function __construct(\stdClass $foo, array $elements = []) { $this->foo = $foo; parent::__construct($elements); } protected function createFrom(array $elements) : self { return new static($this->foo, $elements); }}