Explicit nullable type

tvdijen · tvdijen · commit 18f451aed250 · 2024-12-02T00:30:53.000+01:00
diff --git a/src/Utils/XML.php b/src/Utils/XML.php
@@ -33,8 +33,8 @@ class XML
     public static function canonicalizeData(
         DOMElement $element,
         string $c14nMethod,
-        array $xpaths = null,
-        array $prefixes = null,
+        ?array $xpaths = null,
+        ?array $prefixes = null,
     ): string {
         $withComments = match ($c14nMethod) {
             C::C14N_EXCLUSIVE_WITH_COMMENTS, C::C14N_INCLUSIVE_WITH_COMMENTS => true,
diff --git a/src/XML/EncryptedElementTrait.php b/src/XML/EncryptedElementTrait.php
@@ -179,7 +179,7 @@ public static function fromXML(DOMElement $xml): static
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $this->encryptedData->toXML($e);
@@ -196,7 +196,7 @@ public function toXML(DOMElement $parent = null): DOMElement
      * @param \DOMElement|null $parent The element we should append to.
      * @return \DOMElement
      */
-    abstract public function instantiateParentElement(DOMElement $parent = null): DOMElement;
+    abstract public function instantiateParentElement(?DOMElement $parent = null): DOMElement;
 
 
     /**
diff --git a/src/XML/SignedElementInterface.php b/src/XML/SignedElementInterface.php
@@ -65,5 +65,5 @@ public function isSigned(): bool;
      * in the signature.
      * @throws \SimpleSAML\XMLSecurity\Exception\RuntimeException if the signature fails to validate.
      */
-    public function verify(SignatureAlgorithmInterface $verifier = null): SignedElementInterface;
+    public function verify(?SignatureAlgorithmInterface $verifier = null): SignedElementInterface;
 }
diff --git a/src/XML/ds/AbstractKeyInfoType.php b/src/XML/ds/AbstractKeyInfoType.php
@@ -100,7 +100,7 @@ public function getInfo(): array
      * @param \DOMElement|null $parent The element we should append this KeyInfo to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/CanonicalizationMethod.php b/src/XML/ds/CanonicalizationMethod.php
@@ -78,7 +78,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this KeyName element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('Algorithm', $this->getAlgorithm());
diff --git a/src/XML/ds/DigestMethod.php b/src/XML/ds/DigestMethod.php
@@ -84,7 +84,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this DigestMethod element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('Algorithm', $this->getAlgorithm());
diff --git a/src/XML/ds/DsObject.php b/src/XML/ds/DsObject.php
@@ -123,7 +123,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this ds:Object element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/KeyValue.php b/src/XML/ds/KeyValue.php
@@ -100,7 +100,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this KeyValue element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/Manifest.php b/src/XML/ds/Manifest.php
@@ -88,7 +88,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this Manifest element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/RSAKeyValue.php b/src/XML/ds/RSAKeyValue.php
@@ -104,7 +104,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this RSAKeyValue element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/Reference.php b/src/XML/ds/Reference.php
@@ -167,7 +167,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this Reference element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         if ($this->getId() !== null) {
diff --git a/src/XML/ds/RetrievalMethod.php b/src/XML/ds/RetrievalMethod.php
@@ -100,7 +100,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this RetrievalMethod element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('URI', $this->getURI());
diff --git a/src/XML/ds/Signature.php b/src/XML/ds/Signature.php
@@ -161,7 +161,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this Signature element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/SignatureMethod.php b/src/XML/ds/SignatureMethod.php
@@ -76,7 +76,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this SignatureMethod element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('Algorithm', $this->getAlgorithm());
diff --git a/src/XML/ds/SignatureProperties.php b/src/XML/ds/SignatureProperties.php
@@ -89,7 +89,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this SignatureProperties element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/SignatureProperty.php b/src/XML/ds/SignatureProperty.php
@@ -102,7 +102,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this SignatureProperty element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('Target', $this->getTarget());
diff --git a/src/XML/ds/SignatureValue.php b/src/XML/ds/SignatureValue.php
@@ -70,7 +70,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this SignatureValue element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->textContent = $this->getContent();
diff --git a/src/XML/ds/SignedInfo.php b/src/XML/ds/SignedInfo.php
@@ -172,7 +172,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this SignedInfo element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/Transform.php b/src/XML/ds/Transform.php
@@ -127,7 +127,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this Transform element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/Transforms.php b/src/XML/ds/Transforms.php
@@ -76,7 +76,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this Transforms element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/X509Data.php b/src/XML/ds/X509Data.php
@@ -98,7 +98,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this X509Data element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/X509IssuerSerial.php b/src/XML/ds/X509IssuerSerial.php
@@ -90,7 +90,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this X509IssuerSerial element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/ds/X509SerialNumber.php b/src/XML/ds/X509SerialNumber.php
@@ -66,7 +66,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this X509SerialNumber element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->textContent = $this->getContent();
diff --git a/src/XML/ds/XPath.php b/src/XML/ds/XPath.php
@@ -88,7 +88,7 @@ public static function fromXML(DOMElement $xml): static
      * @param DOMElement|null $parent
      * @return DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->textContent = $this->getExpression();
diff --git a/src/XML/dsig11/KeyInfoReference.php b/src/XML/dsig11/KeyInfoReference.php
@@ -80,7 +80,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this KeyInfoReference element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('URI', $this->getURI());
diff --git a/src/XML/dsig11/X509Digest.php b/src/XML/dsig11/X509Digest.php
@@ -81,7 +81,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this X509Digest element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->textContent = $this->getContent();
diff --git a/src/XML/ec/InclusiveNamespaces.php b/src/XML/ec/InclusiveNamespaces.php
@@ -68,7 +68,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this InclusiveNamespaces to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/xenc/AbstractAgreementMethodType.php b/src/XML/xenc/AbstractAgreementMethodType.php
@@ -140,7 +140,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this AgreementMethod to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('Algorithm', $this->getAlgorithm());
diff --git a/src/XML/xenc/AbstractDHKeyValueType.php b/src/XML/xenc/AbstractDHKeyValueType.php
@@ -172,7 +172,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this DHKeyValue to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/xenc/AbstractEncryptedType.php b/src/XML/xenc/AbstractEncryptedType.php
@@ -125,7 +125,7 @@ public function getType(): ?string
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/xenc/AbstractEncryptionMethod.php b/src/XML/xenc/AbstractEncryptionMethod.php
@@ -118,7 +118,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this EncryptionMethod to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('Algorithm', $this->getAlgorithm());
diff --git a/src/XML/xenc/AbstractEncryptionPropertiesType.php b/src/XML/xenc/AbstractEncryptionPropertiesType.php
@@ -75,7 +75,7 @@ public static function fromXML(DOMElement $xml): static
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/xenc/AbstractEncryptionPropertyType.php b/src/XML/xenc/AbstractEncryptionPropertyType.php
@@ -99,7 +99,7 @@ public static function fromXML(DOMElement $xml): static
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/xenc/AbstractReference.php b/src/XML/xenc/AbstractReference.php
@@ -74,7 +74,7 @@ public static function fromXML(DOMElement $xml): static
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('URI', $this->getUri());
diff --git a/src/XML/xenc/CipherData.php b/src/XML/xenc/CipherData.php
@@ -100,7 +100,7 @@ public static function fromXML(DOMElement $xml): static
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/xenc/CipherReference.php b/src/XML/xenc/CipherReference.php
@@ -68,7 +68,7 @@ public static function fromXML(DOMElement $xml): static
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->setAttribute('URI', $this->getUri());
diff --git a/src/XML/xenc/EncryptedKey.php b/src/XML/xenc/EncryptedKey.php
@@ -242,7 +242,7 @@ public static function fromXML(DOMElement $xml): static
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = parent::toXML($parent);
 
diff --git a/src/XML/xenc/KeySize.php b/src/XML/xenc/KeySize.php
@@ -60,7 +60,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
         $e->textContent = strval($this->getKeySize());
diff --git a/src/XML/xenc/ReferenceList.php b/src/XML/xenc/ReferenceList.php
@@ -98,7 +98,7 @@ public static function fromXML(DOMElement $xml): static
     /**
      * @inheritDoc
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/src/XML/xenc/Transforms.php b/src/XML/xenc/Transforms.php
@@ -77,7 +77,7 @@ public static function fromXML(DOMElement $xml): static
      * @param \DOMElement|null $parent The element we should append this Transforms element to.
      * @return \DOMElement
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         $e = $this->instantiateParentElement($parent);
 
diff --git a/tests/XML/CustomSignable.php b/tests/XML/CustomSignable.php
@@ -182,7 +182,7 @@ public static function fromXML(DOMElement $xml): static
      * @return \DOMElement The XML element after adding the data corresponding to this CustomSignable.
      * @throws \Exception
      */
-    public function toXML(DOMElement $parent = null): DOMElement
+    public function toXML(?DOMElement $parent = null): DOMElement
     {
         if ($this->signer !== null) {
             $signedXML = $this->doSign($this->xml);

Original file line number	Diff line number	Diff line change
`@@ -65,5 +65,5 @@ public function isSigned(): bool;`
`65`	`65`	`* in the signature.`
`66`	`66`	`* @throws \SimpleSAML\XMLSecurity\Exception\RuntimeException if the signature fails to validate.`
`67`	`67`	`*/`
`68`		`- public function verify(SignatureAlgorithmInterface $verifier = null): SignedElementInterface;`
	`68`	`+ public function verify(?SignatureAlgorithmInterface $verifier = null): SignedElementInterface;`
`69`	`69`	`}`
Original file line number	Diff line number	Diff line change
`@@ -100,7 +100,7 @@ public function getInfo(): array`
`100`	`100`	`* @param \DOMElement\|null $parent The element we should append this KeyInfo to.`
`101`	`101`	`* @return \DOMElement`
`102`	`102`	`*/`
`103`		`- public function toXML(DOMElement $parent = null): DOMElement`
	`103`	`+ public function toXML(?DOMElement $parent = null): DOMElement`
`104`	`104`	`{`
`105`	`105`	`$e = $this->instantiateParentElement($parent);`
`106`	`106`
Original file line number	Diff line number	Diff line change
`@@ -78,7 +78,7 @@ public static function fromXML(DOMElement $xml): static`
`78`	`78`	`* @param \DOMElement\|null $parent The element we should append this KeyName element to.`
`79`	`79`	`* @return \DOMElement`
`80`	`80`	`*/`
`81`		`- public function toXML(DOMElement $parent = null): DOMElement`
	`81`	`+ public function toXML(?DOMElement $parent = null): DOMElement`
`82`	`82`	`{`
`83`	`83`	`$e = $this->instantiateParentElement($parent);`
`84`	`84`	`$e->setAttribute('Algorithm', $this->getAlgorithm());`
Original file line number	Diff line number	Diff line change
`@@ -84,7 +84,7 @@ public static function fromXML(DOMElement $xml): static`
`84`	`84`	`* @param \DOMElement\|null $parent The element we should append this DigestMethod element to.`
`85`	`85`	`* @return \DOMElement`
`86`	`86`	`*/`
`87`		`- public function toXML(DOMElement $parent = null): DOMElement`
	`87`	`+ public function toXML(?DOMElement $parent = null): DOMElement`
`88`	`88`	`{`
`89`	`89`	`$e = $this->instantiateParentElement($parent);`
`90`	`90`	`$e->setAttribute('Algorithm', $this->getAlgorithm());`
Original file line number	Diff line number	Diff line change
`@@ -123,7 +123,7 @@ public static function fromXML(DOMElement $xml): static`
`123`	`123`	`* @param \DOMElement\|null $parent The element we should append this ds:Object element to.`
`124`	`124`	`* @return \DOMElement`
`125`	`125`	`*/`
`126`		`- public function toXML(DOMElement $parent = null): DOMElement`
	`126`	`+ public function toXML(?DOMElement $parent = null): DOMElement`
`127`	`127`	`{`
`128`	`128`	`$e = $this->instantiateParentElement($parent);`
`129`	`129`
Original file line number	Diff line number	Diff line change
`@@ -100,7 +100,7 @@ public static function fromXML(DOMElement $xml): static`
`100`	`100`	`* @param \DOMElement\|null $parent The element we should append this KeyValue element to.`
`101`	`101`	`* @return \DOMElement`
`102`	`102`	`*/`
`103`		`- public function toXML(DOMElement $parent = null): DOMElement`
	`103`	`+ public function toXML(?DOMElement $parent = null): DOMElement`
`104`	`104`	`{`
`105`	`105`	`$e = $this->instantiateParentElement($parent);`
`106`	`106`
Original file line number	Diff line number	Diff line change
`@@ -88,7 +88,7 @@ public static function fromXML(DOMElement $xml): static`
`88`	`88`	`* @param \DOMElement\|null $parent The element we should append this Manifest element to.`
`89`	`89`	`* @return \DOMElement`
`90`	`90`	`*/`
`91`		`- public function toXML(DOMElement $parent = null): DOMElement`
	`91`	`+ public function toXML(?DOMElement $parent = null): DOMElement`
`92`	`92`	`{`
`93`	`93`	`$e = $this->instantiateParentElement($parent);`
`94`	`94`
Original file line number	Diff line number	Diff line change
`@@ -104,7 +104,7 @@ public static function fromXML(DOMElement $xml): static`
`104`	`104`	`* @param \DOMElement\|null $parent The element we should append this RSAKeyValue element to.`
`105`	`105`	`* @return \DOMElement`
`106`	`106`	`*/`
`107`		`- public function toXML(DOMElement $parent = null): DOMElement`
	`107`	`+ public function toXML(?DOMElement $parent = null): DOMElement`
`108`	`108`	`{`
`109`	`109`	`$e = $this->instantiateParentElement($parent);`
`110`	`110`