EntityObject::cloneValues

protected function cloneValues(array $values): array
{
	// Do not clone References to avoid infinite recursion
	$valuesWithoutReferences = $this->filterValuesByMask($values, FieldTypeMask::REFERENCE, true);
	$references = array_diff_key($values, $valuesWithoutReferences);

	return array_merge($references, BitrixMainTypeCollection::clone($valuesWithoutReferences));
}