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<?php |
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declare(strict_types = 1); |
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namespace Sop\X509\Certificate\Extension\CertificatePolicy; |
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use Sop\ASN1\Type\Constructed\Sequence; |
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use Sop\ASN1\Type\Primitive\ObjectIdentifier; |
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use Sop\ASN1\Type\UnspecifiedType; |
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/** |
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* Implements <i>PolicyInformation</i> ASN.1 type used by |
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* 'Certificate Policies' certificate extension. |
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* |
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* @see https://tools.ietf.org/html/rfc5280#section-4.2.1.4 |
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*/ |
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class PolicyInformation implements \Countable, \IteratorAggregate |
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{ |
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/** |
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* Wildcard policy. |
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* |
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* @var string |
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*/ |
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const OID_ANY_POLICY = '2.5.29.32.0'; |
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/** |
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* Policy identifier. |
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* |
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* @var string |
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*/ |
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protected $_oid; |
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/** |
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* Policy qualifiers. |
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* |
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* @var PolicyQualifierInfo[] |
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*/ |
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protected $_qualifiers; |
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/** |
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* Constructor. |
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* |
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* @param string $oid |
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* @param PolicyQualifierInfo ...$qualifiers |
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*/ |
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public function __construct(string $oid, PolicyQualifierInfo ...$qualifiers) |
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{ |
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$this->_oid = $oid; |
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$this->_qualifiers = []; |
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foreach ($qualifiers as $qual) { |
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$this->_qualifiers[$qual->oid()] = $qual; |
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} |
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} |
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/** |
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* Initialize from ASN.1. |
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* |
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* @param Sequence $seq |
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* |
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* @return self |
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*/ |
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public static function fromASN1(Sequence $seq): self |
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{ |
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$oid = $seq->at(0)->asObjectIdentifier()->oid(); |
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$qualifiers = []; |
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if (count($seq) > 1) { |
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$qualifiers = array_map( |
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function (UnspecifiedType $el) { |
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return PolicyQualifierInfo::fromASN1($el->asSequence()); |
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}, $seq->at(1)->asSequence()->elements()); |
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} |
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return new self($oid, ...$qualifiers); |
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} |
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/** |
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* Get policy identifier. |
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* |
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* @return string |
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*/ |
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public function oid(): string |
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{ |
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return $this->_oid; |
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} |
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/** |
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* Check whether this policy is anyPolicy. |
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* |
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* @return bool |
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*/ |
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public function isAnyPolicy(): bool |
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{ |
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return self::OID_ANY_POLICY === $this->_oid; |
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} |
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/** |
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* Get policy qualifiers. |
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* |
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* @return PolicyQualifierInfo[] |
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*/ |
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public function qualifiers(): array |
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{ |
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return array_values($this->_qualifiers); |
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} |
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/** |
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* Check whether qualifier is present. |
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* |
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* @param string $oid |
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* |
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* @return bool |
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*/ |
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public function has(string $oid): bool |
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{ |
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return isset($this->_qualifiers[$oid]); |
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} |
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/** |
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* Get qualifier by OID. |
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* |
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* @param string $oid |
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* |
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* @throws \LogicException IF not set |
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* |
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* @return PolicyQualifierInfo |
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*/ |
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public function get(string $oid): PolicyQualifierInfo |
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{ |
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if (!$this->has($oid)) { |
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throw new \LogicException("No {$oid} qualifier."); |
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} |
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return $this->_qualifiers[$oid]; |
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} |
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/** |
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* Check whether CPS qualifier is present. |
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* |
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* @return bool |
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*/ |
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public function hasCPSQualifier(): bool |
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{ |
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return $this->has(PolicyQualifierInfo::OID_CPS); |
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} |
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/** |
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* Get CPS qualifier. |
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* |
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* @throws \LogicException If not set |
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* |
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* @return CPSQualifier |
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*/ |
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public function CPSQualifier(): CPSQualifier |
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{ |
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if (!$this->hasCPSQualifier()) { |
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throw new \LogicException('CPS qualifier not set.'); |
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} |
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return $this->get(PolicyQualifierInfo::OID_CPS); |
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} |
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/** |
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* Check whether user notice qualifier is present. |
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* |
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* @return bool |
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*/ |
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public function hasUserNoticeQualifier(): bool |
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{ |
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return $this->has(PolicyQualifierInfo::OID_UNOTICE); |
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} |
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/** |
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* Get user notice qualifier. |
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* |
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* @throws \LogicException If not set |
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* |
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* @return UserNoticeQualifier |
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*/ |
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public function userNoticeQualifier(): UserNoticeQualifier |
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{ |
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if (!$this->hasUserNoticeQualifier()) { |
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throw new \LogicException('User notice qualifier not set.'); |
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} |
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return $this->get(PolicyQualifierInfo::OID_UNOTICE); |
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} |
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/** |
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* Get ASN.1 structure. |
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* |
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* @return Sequence |
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*/ |
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public function toASN1(): Sequence |
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{ |
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$elements = [new ObjectIdentifier($this->_oid)]; |
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if (count($this->_qualifiers)) { |
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$qualifiers = array_map( |
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function (PolicyQualifierInfo $pqi) { |
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return $pqi->toASN1(); |
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}, array_values($this->_qualifiers)); |
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$elements[] = new Sequence(...$qualifiers); |
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} |
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return new Sequence(...$elements); |
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} |
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/** |
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* Get number of qualifiers. |
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* |
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* @see \Countable::count() |
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* |
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* @return int |
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*/ |
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public function count(): int |
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{ |
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return count($this->_qualifiers); |
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} |
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/** |
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* Get iterator for qualifiers. |
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* |
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* @see \IteratorAggregate::getIterator() |
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* |
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* @return \ArrayIterator |
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*/ |
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public function getIterator(): \ArrayIterator |
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{ |
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return new \ArrayIterator($this->_qualifiers); |
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} |
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} |
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