another bulk of composer updates

(cherry picked from commit 6685381fd8db507493c3d7c1793f8c05c681bbce)

22 files changed, 397 insertions, 441 deletions

diff --git a/vendor/sabre/dav/lib/DAV/Xml/Element/Prop.php b/vendor/sabre/dav/lib/DAV/Xml/Element/Prop.php
index 71ef03e3f..52a04cf08 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Element/Prop.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Element/Prop.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Element;
 
 use Sabre\DAV\Xml\Property\Complex;
@@ -17,8 +19,8 @@ use Sabre\Xml\XmlDeserializable;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Prop implements XmlDeserializable {
-
+class Prop implements XmlDeserializable
+{
     /**
      * The deserialize method is called during xml parsing.
      *
@@ -38,13 +40,15 @@ class Prop implements XmlDeserializable {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         // If there's no children, we don't do anything.
         if ($reader->isEmptyElement) {
             $reader->next();
+
             return [];
         }
 
@@ -52,22 +56,17 @@ class Prop implements XmlDeserializable {
 
         $reader->read();
         do {
-
-            if ($reader->nodeType === Reader::ELEMENT) {
-
+            if (Reader::ELEMENT === $reader->nodeType) {
                 $clark = $reader->getClark();
                 $values[$clark] = self::parseCurrentElement($reader)['value'];
-
             } else {
                 $reader->read();
             }
-
-        } while ($reader->nodeType !== Reader::END_ELEMENT);
+        } while (Reader::END_ELEMENT !== $reader->nodeType);
 
         $reader->read();
 
         return $values;
-
     }
 
     /**
@@ -81,10 +80,11 @@ class Prop implements XmlDeserializable {
      *   * value - The parsed value.
      *
      * @param Reader $reader
+     *
      * @return array
      */
-    private static function parseCurrentElement(Reader $reader) {
-
+    private static function parseCurrentElement(Reader $reader)
+    {
         $name = $reader->getClark();
 
         if (array_key_exists($name, $reader->elementMap)) {
@@ -95,22 +95,20 @@ class Prop implements XmlDeserializable {
                 $value = call_user_func($deserializer, $reader);
             } else {
                 $type = gettype($deserializer);
-                if ($type === 'string') {
-                    $type .= ' (' . $deserializer . ')';
-                } elseif ($type === 'object') {
-                    $type .= ' (' . get_class($deserializer) . ')';
+                if ('string' === $type) {
+                    $type .= ' ('.$deserializer.')';
+                } elseif ('object' === $type) {
+                    $type .= ' ('.get_class($deserializer).')';
                 }
-                throw new \LogicException('Could not use this type as a deserializer: ' . $type);
+                throw new \LogicException('Could not use this type as a deserializer: '.$type);
             }
         } else {
             $value = Complex::xmlDeserialize($reader);
         }
 
         return [
-            'name'  => $name,
+            'name' => $name,
             'value' => $value,
         ];
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Element/Response.php b/vendor/sabre/dav/lib/DAV/Xml/Element/Response.php
index ce97ae943..a11091809 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Element/Response.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Element/Response.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Element;
 
 use Sabre\Xml\Element;
@@ -7,7 +9,7 @@ use Sabre\Xml\Reader;
 use Sabre\Xml\Writer;
 
 /**
- * WebDAV {DAV:}response parser
+ * WebDAV {DAV:}response parser.
  *
  * This class parses the {DAV:}response element, as defined in:
  *
@@ -17,17 +19,17 @@ use Sabre\Xml\Writer;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Response implements Element {
-
+class Response implements Element
+{
     /**
-     * Url for the response
+     * Url for the response.
      *
      * @var string
      */
     protected $href;
 
     /**
-     * Propertylist, ordered by HTTP status code
+     * Propertylist, ordered by HTTP status code.
      *
      * @var array
      */
@@ -57,51 +59,46 @@ class Response implements Element {
      * deleted.
      *
      * @param string $href
-     * @param array $responseProperties
+     * @param array  $responseProperties
      * @param string $httpStatus
      */
-    function __construct($href, array $responseProperties, $httpStatus = null) {
-
+    public function __construct($href, array $responseProperties, $httpStatus = null)
+    {
         $this->href = $href;
         $this->responseProperties = $responseProperties;
         $this->httpStatus = $httpStatus;
-
     }
 
     /**
-     * Returns the url
+     * Returns the url.
      *
      * @return string
      */
-    function getHref() {
-
+    public function getHref()
+    {
         return $this->href;
-
     }
 
     /**
-     * Returns the httpStatus value
+     * Returns the httpStatus value.
      *
      * @return string
      */
-    function getHttpStatus() {
-
+    public function getHttpStatus()
+    {
         return $this->httpStatus;
-
     }
 
     /**
-     * Returns the property list
+     * Returns the property list.
      *
      * @return array
      */
-    function getResponseProperties() {
-
+    public function getResponseProperties()
+    {
         return $this->responseProperties;
-
     }
 
-
     /**
      * The serialize method is called during xml writing.
      *
@@ -115,19 +112,17 @@ class Response implements Element {
      * responsible for closing them.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         if ($status = $this->getHTTPStatus()) {
-            $writer->writeElement('{DAV:}status', 'HTTP/1.1 ' . $status . ' ' . \Sabre\HTTP\Response::$statusCodes[$status]);
+            $writer->writeElement('{DAV:}status', 'HTTP/1.1 '.$status.' '.\Sabre\HTTP\Response::$statusCodes[$status]);
         }
-        $writer->writeElement('{DAV:}href', $writer->contextUri . \Sabre\HTTP\encodePath($this->getHref()));
+        $writer->writeElement('{DAV:}href', $writer->contextUri.\Sabre\HTTP\encodePath($this->getHref()));
 
         $empty = true;
 
         foreach ($this->getResponseProperties() as $status => $properties) {
-
             // Skipping empty lists
             if (!$properties || (!ctype_digit($status) && !is_int($status))) {
                 continue;
@@ -135,9 +130,8 @@ class Response implements Element {
             $empty = false;
             $writer->startElement('{DAV:}propstat');
             $writer->writeElement('{DAV:}prop', $properties);
-            $writer->writeElement('{DAV:}status', 'HTTP/1.1 ' . $status . ' ' . \Sabre\HTTP\Response::$statusCodes[$status]);
+            $writer->writeElement('{DAV:}status', 'HTTP/1.1 '.$status.' '.\Sabre\HTTP\Response::$statusCodes[$status]);
             $writer->endElement(); // {DAV:}propstat
-
         }
         if ($empty) {
             /*
@@ -149,12 +143,10 @@ class Response implements Element {
              * no properties.
              */
             $writer->writeElement('{DAV:}propstat', [
-                '{DAV:}prop'   => [],
-                '{DAV:}status' => 'HTTP/1.1 418 ' . \Sabre\HTTP\Response::$statusCodes[418]
+                '{DAV:}prop' => [],
+                '{DAV:}status' => 'HTTP/1.1 418 '.\Sabre\HTTP\Response::$statusCodes[418],
             ]);
-
         }
-
     }
 
     /**
@@ -176,10 +168,11 @@ class Response implements Element {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $reader->pushContext();
 
         $reader->elementMap['{DAV:}propstat'] = 'Sabre\\Xml\\Element\\KeyValue';
@@ -192,16 +185,16 @@ class Response implements Element {
         // called. But we don't want this, because a singular element without
         // child-elements implies 'no value' in {DAV:}prop, so we want to skip
         // deserializers and just set null for those.
-        $reader->elementMap['{DAV:}prop'] = function(Reader $reader) {
-
+        $reader->elementMap['{DAV:}prop'] = function (Reader $reader) {
             if ($reader->isEmptyElement) {
                 $reader->next();
+
                 return [];
             }
             $values = [];
             $reader->read();
             do {
-                if ($reader->nodeType === Reader::ELEMENT) {
+                if (Reader::ELEMENT === $reader->nodeType) {
                     $clark = $reader->getClark();
 
                     if ($reader->isEmptyElement) {
@@ -213,10 +206,10 @@ class Response implements Element {
                 } else {
                     $reader->read();
                 }
-            } while ($reader->nodeType !== Reader::END_ELEMENT);
+            } while (Reader::END_ELEMENT !== $reader->nodeType);
             $reader->read();
-            return $values;
 
+            return $values;
         };
         $elems = $reader->parseInnerTree();
         $reader->popContext();
@@ -226,28 +219,24 @@ class Response implements Element {
         $statusCode = null;
 
         foreach ($elems as $elem) {
-
             switch ($elem['name']) {
-
-                case '{DAV:}href' :
+                case '{DAV:}href':
                     $href = $elem['value'];
                     break;
-                case '{DAV:}propstat' :
+                case '{DAV:}propstat':
                     $status = $elem['value']['{DAV:}status'];
-                    list(, $status, ) = explode(' ', $status, 3);
+                    list(, $status) = explode(' ', $status, 3);
                     $properties = isset($elem['value']['{DAV:}prop']) ? $elem['value']['{DAV:}prop'] : [];
-                    if ($properties) $propertyLists[$status] = $properties;
+                    if ($properties) {
+                        $propertyLists[$status] = $properties;
+                    }
                     break;
-                case '{DAV:}status' :
-                    list(, $statusCode, ) = explode(' ', $elem['value'], 3);
+                case '{DAV:}status':
+                    list(, $statusCode) = explode(' ', $elem['value'], 3);
                     break;
-
             }
-
         }
 
         return new self($href, $propertyLists, $statusCode);
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Element/Sharee.php b/vendor/sabre/dav/lib/DAV/Xml/Element/Sharee.php
index e187bf11c..e0db3bf37 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Element/Sharee.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Element/Sharee.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Element;
 
 use Sabre\DAV\Exception\BadRequest;
@@ -18,8 +20,8 @@ use Sabre\Xml\Writer;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Sharee implements Element {
-
+class Sharee implements Element
+{
     /**
      * A URL. Usually a mailto: address, could also be a principal url.
      * This uniquely identifies the sharee.
@@ -79,24 +81,21 @@ class Sharee implements Element {
     public $inviteStatus;
 
     /**
-     * Creates the object
+     * Creates the object.
      *
      * $properties will be used to populate all internal properties.
      *
      * @param array $properties
      */
-    function __construct(array $properties = []) {
-
+    public function __construct(array $properties = [])
+    {
         foreach ($properties as $k => $v) {
-
             if (property_exists($this, $k)) {
                 $this->$k = $v;
             } else {
-                throw new \InvalidArgumentException('Unknown property: ' . $k);
+                throw new \InvalidArgumentException('Unknown property: '.$k);
             }
-
         }
-
     }
 
     /**
@@ -116,31 +115,28 @@ class Sharee implements Element {
      * If you are opening new elements, you must also close them again.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
-
+    public function xmlSerialize(Writer $writer)
+    {
         $writer->write([
             new Href($this->href),
-            '{DAV:}prop'         => $this->properties,
+            '{DAV:}prop' => $this->properties,
             '{DAV:}share-access' => new ShareAccess($this->access),
         ]);
         switch ($this->inviteStatus) {
-            case Plugin::INVITE_NORESPONSE :
+            case Plugin::INVITE_NORESPONSE:
                 $writer->writeElement('{DAV:}invite-noresponse');
                 break;
-            case Plugin::INVITE_ACCEPTED :
+            case Plugin::INVITE_ACCEPTED:
                 $writer->writeElement('{DAV:}invite-accepted');
                 break;
-            case Plugin::INVITE_DECLINED :
+            case Plugin::INVITE_DECLINED:
                 $writer->writeElement('{DAV:}invite-declined');
                 break;
-            case Plugin::INVITE_INVALID :
+            case Plugin::INVITE_INVALID:
                 $writer->writeElement('{DAV:}invite-invalid');
                 break;
         }
-
     }
 
     /**
@@ -162,10 +158,11 @@ class Sharee implements Element {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         // Temporarily override configuration
         $reader->pushContext();
         $reader->elementMap['{DAV:}share-access'] = 'Sabre\DAV\Xml\Property\ShareAccess';
@@ -192,8 +189,7 @@ class Sharee implements Element {
             throw new BadRequest('Every {DAV:}sharee must have a {DAV:}share-access child element');
         }
         $sharee->access = $elems['share-access']->getValue();
-        return $sharee;
 
+        return $sharee;
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/Complex.php b/vendor/sabre/dav/lib/DAV/Xml/Property/Complex.php
index 258806e4a..990302054 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/Complex.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/Complex.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\Xml\Element\XmlFragment;
@@ -15,8 +17,8 @@ use Sabre\Xml\Reader;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Complex extends XmlFragment {
-
+class Complex extends XmlFragment
+{
     /**
      * The deserialize method is called during xml parsing.
      *
@@ -36,15 +38,17 @@ class Complex extends XmlFragment {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $xml = $reader->readInnerXml();
 
-        if ($reader->nodeType === Reader::ELEMENT && $reader->isEmptyElement) {
+        if (Reader::ELEMENT === $reader->nodeType && $reader->isEmptyElement) {
             // Easy!
             $reader->next();
+
             return null;
         }
         // Now we have a copy of the inner xml, we need to traverse it to get
@@ -56,21 +60,19 @@ class Complex extends XmlFragment {
         $text = '';
 
         while (true) {
-
             switch ($reader->nodeType) {
-                case Reader::ELEMENT :
+                case Reader::ELEMENT:
                     $nonText = true;
                     $reader->next();
                     continue 2;
-                case Reader::TEXT :
-                case Reader::CDATA :
+                case Reader::TEXT:
+                case Reader::CDATA:
                     $text .= $reader->value;
                     break;
-                case Reader::END_ELEMENT :
+                case Reader::END_ELEMENT:
                     break 2;
             }
             $reader->read();
-
         }
 
         // Make sure we advance the cursor one step further.
@@ -78,12 +80,10 @@ class Complex extends XmlFragment {
 
         if ($nonText) {
             $new = new self($xml);
+
             return $new;
         } else {
             return $text;
         }
-
     }
-
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/GetLastModified.php b/vendor/sabre/dav/lib/DAV/Xml/Property/GetLastModified.php
index 101a0f0c9..05a00c5e5 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/GetLastModified.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/GetLastModified.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use DateTime;
@@ -19,42 +21,40 @@ use Sabre\Xml\Writer;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class GetLastModified implements Element {
-
+class GetLastModified implements Element
+{
     /**
-     * time
+     * time.
      *
      * @var DateTime
      */
     public $time;
 
     /**
-     * Constructor
+     * Constructor.
      *
      * @param int|DateTime $time
      */
-    function __construct($time) {
-
+    public function __construct($time)
+    {
         if ($time instanceof DateTime) {
             $this->time = clone $time;
         } else {
-            $this->time = new DateTime('@' . $time);
+            $this->time = new DateTime('@'.$time);
         }
 
         // Setting timezone to UTC
         $this->time->setTimezone(new DateTimeZone('UTC'));
-
     }
 
     /**
-     * getTime
+     * getTime.
      *
      * @return DateTime
      */
-    function getTime() {
-
+    public function getTime()
+    {
         return $this->time;
-
     }
 
     /**
@@ -70,14 +70,12 @@ class GetLastModified implements Element {
      * responsible for closing them.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         $writer->write(
-            HTTP\Util::toHTTPDate($this->time)
+            HTTP\toDate($this->time)
         );
-
     }
 
     /**
@@ -99,12 +97,12 @@ class GetLastModified implements Element {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         return
             new self(new DateTime($reader->parseInnerTree()));
-
     }
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/Href.php b/vendor/sabre/dav/lib/DAV/Xml/Property/Href.php
index 6c4f11b87..c479c1602 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/Href.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/Href.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\DAV\Browser\HtmlOutput;
@@ -10,7 +12,7 @@ use Sabre\Xml\Reader;
 use Sabre\Xml\Writer;
 
 /**
- * Href property
+ * Href property.
  *
  * This class represents any WebDAV property that contains a {DAV:}href
  * element, and there are many.
@@ -23,17 +25,17 @@ use Sabre\Xml\Writer;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Href implements Element, HtmlOutput {
-
+class Href implements Element, HtmlOutput
+{
     /**
-     * List of uris
+     * List of uris.
      *
      * @var array
      */
     protected $hrefs;
 
     /**
-     * Constructor
+     * Constructor.
      *
      * You must either pass a string for a single href, or an array of hrefs.
      *
@@ -42,35 +44,32 @@ class Href implements Element, HtmlOutput {
      *
      * @param string|string[] $hrefs
      */
-    function __construct($hrefs) {
-
+    public function __construct($hrefs)
+    {
         if (is_string($hrefs)) {
             $hrefs = [$hrefs];
         }
         $this->hrefs = $hrefs;
-
     }
 
     /**
      * Returns the first Href.
      *
-     * @return string
+     * @return string|null
      */
-    function getHref() {
-
-        return $this->hrefs[0];
-
+    public function getHref()
+    {
+        return $this->hrefs[0] ?? null;
     }
 
     /**
-     * Returns the hrefs as an array
+     * Returns the hrefs as an array.
      *
      * @return array
      */
-    function getHrefs() {
-
+    public function getHrefs()
+    {
         return $this->hrefs;
-
     }
 
     /**
@@ -90,15 +89,13 @@ class Href implements Element, HtmlOutput {
      * If you are opening new elements, you must also close them again.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         foreach ($this->getHrefs() as $href) {
             $href = Uri\resolve($writer->contextUri, $href);
             $writer->writeElement('{DAV:}href', $href);
         }
-
     }
 
     /**
@@ -113,16 +110,17 @@ class Href implements Element, HtmlOutput {
      * be used to construct local links.
      *
      * @param HtmlOutputHelper $html
+     *
      * @return string
      */
-    function toHtml(HtmlOutputHelper $html) {
-
+    public function toHtml(HtmlOutputHelper $html)
+    {
         $links = [];
         foreach ($this->getHrefs() as $href) {
             $links[] = $html->link($href);
         }
-        return implode('<br />', $links);
 
+        return implode('<br />', $links);
     }
 
     /**
@@ -144,22 +142,21 @@ class Href implements Element, HtmlOutput {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $hrefs = [];
-        foreach ((array)$reader->parseInnerTree() as $elem) {
-            if ($elem['name'] !== '{DAV:}href')
+        foreach ((array) $reader->parseInnerTree() as $elem) {
+            if ('{DAV:}href' !== $elem['name']) {
                 continue;
+            }
 
             $hrefs[] = $elem['value'];
-
         }
         if ($hrefs) {
-            return new self($hrefs, false);
+            return new self($hrefs);
         }
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/Invite.php b/vendor/sabre/dav/lib/DAV/Xml/Property/Invite.php
index 6adad3650..b5e2dae46 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/Invite.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/Invite.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\DAV\Xml\Element\Sharee;
@@ -20,10 +22,10 @@ use Sabre\Xml\XmlSerializable;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Invite implements XmlSerializable {
-
+class Invite implements XmlSerializable
+{
     /**
-     * A list of sharees
+     * A list of sharees.
      *
      * @var Sharee[]
      */
@@ -34,10 +36,9 @@ class Invite implements XmlSerializable {
      *
      * @param Sharee[] $sharees
      */
-    function __construct(array $sharees) {
-
+    public function __construct(array $sharees)
+    {
         $this->sharees = $sharees;
-
     }
 
     /**
@@ -57,14 +58,11 @@ class Invite implements XmlSerializable {
      * If you are opening new elements, you must also close them again.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         foreach ($this->sharees as $sharee) {
             $writer->writeElement('{DAV:}sharee', $sharee);
         }
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/LocalHref.php b/vendor/sabre/dav/lib/DAV/Xml/Property/LocalHref.php
index 00d2fa708..cb794974f 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/LocalHref.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/LocalHref.php
@@ -1,11 +1,13 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\HTTP;
 
 /**
- * LocalHref property
+ * LocalHref property.
  *
  * Like the Href property, this element represents {DAV:}href. The difference
  * is that this is used strictly for paths on the server. The LocalHref property
@@ -22,10 +24,10 @@ use Sabre\HTTP;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class LocalHref extends Href {
-
+class LocalHref extends Href
+{
     /**
-     * Constructor
+     * Constructor.
      *
      * You must either pass a string for a single href, or an array of hrefs.
      *
@@ -34,15 +36,13 @@ class LocalHref extends Href {
      *
      * @param string|string[] $hrefs
      */
-    function __construct($hrefs) {
-
+    public function __construct($hrefs)
+    {
         parent::__construct(array_map(
-            function($href) {
+            function ($href) {
                 return \Sabre\HTTP\encodePath($href);
             },
-            (array)$hrefs
+            (array) $hrefs
         ));
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/LockDiscovery.php b/vendor/sabre/dav/lib/DAV/Xml/Property/LockDiscovery.php
index f4b692219..c33812b3e 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/LockDiscovery.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/LockDiscovery.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\DAV;
@@ -20,10 +22,10 @@ use Sabre\Xml\XmlSerializable;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class LockDiscovery implements XmlSerializable {
-
+class LockDiscovery implements XmlSerializable
+{
     /**
-     * locks
+     * locks.
      *
      * @var LockInfo[]
      */
@@ -37,17 +39,16 @@ class LockDiscovery implements XmlSerializable {
      *
      * @var bool
      */
-    static $hideLockRoot = false;
+    public static $hideLockRoot = false;
 
     /**
-     * __construct
+     * __construct.
      *
      * @param LockInfo[] $locks
      */
-    function __construct($locks) {
-
+    public function __construct($locks)
+    {
         $this->locks = $locks;
-
     }
 
     /**
@@ -63,16 +64,14 @@ class LockDiscovery implements XmlSerializable {
      * responsible for closing them.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         foreach ($this->locks as $lock) {
-
             $writer->startElement('{DAV:}activelock');
 
             $writer->startElement('{DAV:}lockscope');
-            if ($lock->scope === LockInfo::SHARED) {
+            if (LockInfo::SHARED === $lock->scope) {
                 $writer->writeElement('{DAV:}shared');
             } else {
                 $writer->writeElement('{DAV:}exclusive');
@@ -86,21 +85,23 @@ class LockDiscovery implements XmlSerializable {
 
             if (!self::$hideLockRoot) {
                 $writer->startElement('{DAV:}lockroot');
-                $writer->writeElement('{DAV:}href', $writer->contextUri . $lock->uri);
+                $writer->writeElement('{DAV:}href', $writer->contextUri.$lock->uri);
                 $writer->endElement(); // {DAV:}lockroot
             }
-            $writer->writeElement('{DAV:}depth', ($lock->depth == DAV\Server::DEPTH_INFINITY ? 'infinity' : $lock->depth));
-            $writer->writeElement('{DAV:}timeout', 'Second-' . $lock->timeout);
-
-            $writer->startElement('{DAV:}locktoken');
-            $writer->writeElement('{DAV:}href', 'opaquelocktoken:' . $lock->token);
-            $writer->endElement(); // {DAV:}locktoken
+            $writer->writeElement('{DAV:}depth', (DAV\Server::DEPTH_INFINITY == $lock->depth ? 'infinity' : $lock->depth));
+            $writer->writeElement('{DAV:}timeout', (LockInfo::TIMEOUT_INFINITE === $lock->timeout ? 'Infinite' : 'Second-'.$lock->timeout));
+
+            // optional according to https://tools.ietf.org/html/rfc4918#section-6.5
+            if (null !== $lock->token && '' !== $lock->token) {
+                $writer->startElement('{DAV:}locktoken');
+                $writer->writeElement('{DAV:}href', 'opaquelocktoken:'.$lock->token);
+                $writer->endElement(); // {DAV:}locktoken
+            }
 
-            $writer->writeElement('{DAV:}owner', new XmlFragment($lock->owner));
+            if ($lock->owner) {
+                $writer->writeElement('{DAV:}owner', new XmlFragment($lock->owner));
+            }
             $writer->endElement(); // {DAV:}activelock
-
         }
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/ResourceType.php b/vendor/sabre/dav/lib/DAV/Xml/Property/ResourceType.php
index ce640ff32..ce07d4382 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/ResourceType.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/ResourceType.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\DAV\Browser\HtmlOutput;
@@ -8,7 +10,7 @@ use Sabre\Xml\Element;
 use Sabre\Xml\Reader;
 
 /**
- * {DAV:}resourcetype property
+ * {DAV:}resourcetype property.
  *
  * This class represents the {DAV:}resourcetype property, as defined in:
  *
@@ -18,10 +20,10 @@ use Sabre\Xml\Reader;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class ResourceType extends Element\Elements implements HtmlOutput {
-
+class ResourceType extends Element\Elements implements HtmlOutput
+{
     /**
-     * Constructor
+     * Constructor.
      *
      * You can either pass null (for no resourcetype), a string (for a single
      * resourcetype) or an array (for multiple).
@@ -30,48 +32,44 @@ class ResourceType extends Element\Elements implements HtmlOutput {
      *
      * @param array|string|null $resourceTypes
      */
-    function __construct($resourceTypes = null) {
-
-        parent::__construct((array)$resourceTypes);
-
+    public function __construct($resourceTypes = null)
+    {
+        parent::__construct((array) $resourceTypes);
     }
 
     /**
-     * Returns the values in clark-notation
+     * Returns the values in clark-notation.
      *
      * For example array('{DAV:}collection')
      *
      * @return array
      */
-    function getValue() {
-
+    public function getValue()
+    {
         return $this->value;
-
     }
 
     /**
-     * Checks if the principal contains a certain value
+     * Checks if the principal contains a certain value.
      *
      * @param string $type
+     *
      * @return bool
      */
-    function is($type) {
-
+    public function is($type)
+    {
         return in_array($type, $this->value);
-
     }
 
     /**
-     * Adds a resourcetype value to this property
+     * Adds a resourcetype value to this property.
      *
      * @param string $type
-     * @return void
      */
-    function add($type) {
-
+    public function add($type)
+    {
         $this->value[] = $type;
         $this->value = array_unique($this->value);
-
     }
 
     /**
@@ -93,13 +91,13 @@ class ResourceType extends Element\Elements implements HtmlOutput {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         return
             new self(parent::xmlDeserialize($reader));
-
     }
 
     /**
@@ -114,15 +112,14 @@ class ResourceType extends Element\Elements implements HtmlOutput {
      * be used to construct local links.
      *
      * @param HtmlOutputHelper $html
+     *
      * @return string
      */
-    function toHtml(HtmlOutputHelper $html) {
-
+    public function toHtml(HtmlOutputHelper $html)
+    {
         return implode(
             ', ',
             array_map([$html, 'xmlName'], $this->getValue())
         );
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/ShareAccess.php b/vendor/sabre/dav/lib/DAV/Xml/Property/ShareAccess.php
index 939062f76..95175053a 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/ShareAccess.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/ShareAccess.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\DAV\Exception\BadRequest;
@@ -22,10 +24,10 @@ use Sabre\Xml\Writer;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class ShareAccess implements Element {
-
+class ShareAccess implements Element
+{
     /**
-     * Either SHARED or SHAREDOWNER
+     * Either SHARED or SHAREDOWNER.
      *
      * @var int
      */
@@ -39,10 +41,9 @@ class ShareAccess implements Element {
      *
      * @param int $shareAccess
      */
-    function __construct($shareAccess) {
-
+    public function __construct($shareAccess)
+    {
         $this->value = $shareAccess;
-
     }
 
     /**
@@ -50,10 +51,9 @@ class ShareAccess implements Element {
      *
      * @return int
      */
-    function getValue() {
-
+    public function getValue()
+    {
         return $this->value;
-
     }
 
     /**
@@ -73,30 +73,26 @@ class ShareAccess implements Element {
      * If you are opening new elements, you must also close them again.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         switch ($this->value) {
-
-            case SharingPlugin::ACCESS_NOTSHARED :
+            case SharingPlugin::ACCESS_NOTSHARED:
                 $writer->writeElement('{DAV:}not-shared');
                 break;
-            case SharingPlugin::ACCESS_SHAREDOWNER :
+            case SharingPlugin::ACCESS_SHAREDOWNER:
                 $writer->writeElement('{DAV:}shared-owner');
                 break;
-            case SharingPlugin::ACCESS_READ :
+            case SharingPlugin::ACCESS_READ:
                 $writer->writeElement('{DAV:}read');
                 break;
-            case SharingPlugin::ACCESS_READWRITE :
+            case SharingPlugin::ACCESS_READWRITE:
                 $writer->writeElement('{DAV:}read-write');
                 break;
-            case SharingPlugin::ACCESS_NOACCESS :
+            case SharingPlugin::ACCESS_NOACCESS:
                 $writer->writeElement('{DAV:}no-access');
                 break;
-
         }
-
     }
 
     /**
@@ -118,26 +114,26 @@ class ShareAccess implements Element {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $elems = $reader->parseInnerTree();
         foreach ($elems as $elem) {
             switch ($elem['name']) {
-                case '{DAV:}not-shared' :
+                case '{DAV:}not-shared':
                     return new self(SharingPlugin::ACCESS_NOTSHARED);
-                case '{DAV:}shared-owner' :
+                case '{DAV:}shared-owner':
                     return new self(SharingPlugin::ACCESS_SHAREDOWNER);
-                case '{DAV:}read' :
+                case '{DAV:}read':
                     return new self(SharingPlugin::ACCESS_READ);
-                case '{DAV:}read-write' :
+                case '{DAV:}read-write':
                     return new self(SharingPlugin::ACCESS_READWRITE);
-                case '{DAV:}no-access' :
+                case '{DAV:}no-access':
                     return new self(SharingPlugin::ACCESS_NOACCESS);
             }
         }
         throw new BadRequest('Invalid value for {DAV:}share-access element');
-
     }
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedLock.php b/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedLock.php
index 677fdde4b..26e7d646e 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedLock.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedLock.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\Xml\Writer;
@@ -18,8 +20,8 @@ use Sabre\Xml\XmlSerializable;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class SupportedLock implements XmlSerializable {
-
+class SupportedLock implements XmlSerializable
+{
     /**
      * The xmlSerialize method is called during xml writing.
      *
@@ -37,18 +39,16 @@ class SupportedLock implements XmlSerializable {
      * If you are opening new elements, you must also close them again.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         $writer->writeElement('{DAV:}lockentry', [
             '{DAV:}lockscope' => ['{DAV:}exclusive' => null],
-            '{DAV:}locktype'  => ['{DAV:}write' => null],
+            '{DAV:}locktype' => ['{DAV:}write' => null],
         ]);
         $writer->writeElement('{DAV:}lockentry', [
             '{DAV:}lockscope' => ['{DAV:}shared' => null],
-            '{DAV:}locktype'  => ['{DAV:}write' => null],
+            '{DAV:}locktype' => ['{DAV:}write' => null],
         ]);
-
     }
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedMethodSet.php b/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedMethodSet.php
index 1a3878ef7..06ab28c94 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedMethodSet.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedMethodSet.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\DAV\Browser\HtmlOutput;
@@ -20,24 +22,23 @@ use Sabre\Xml\XmlSerializable;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class SupportedMethodSet implements XmlSerializable, HtmlOutput {
-
+class SupportedMethodSet implements XmlSerializable, HtmlOutput
+{
     /**
-     * List of methods
+     * List of methods.
      *
      * @var string[]
      */
     protected $methods = [];
 
     /**
-     * Creates the property
+     * Creates the property.
      *
      * @param string[] $methods
      */
-    function __construct(array $methods) {
-
+    public function __construct(array $methods)
+    {
         $this->methods = $methods;
-
     }
 
     /**
@@ -45,25 +46,24 @@ class SupportedMethodSet implements XmlSerializable, HtmlOutput {
      *
      * @return string[]
      */
-    function getValue() {
-
+    public function getValue()
+    {
         return $this->methods;
-
     }
 
     /**
      * Returns true or false if the property contains a specific method.
      *
      * @param string $methodName
+     *
      * @return bool
      */
-    function has($methodName) {
-
+    public function has($methodName)
+    {
         return in_array(
             $methodName,
             $this->methods
         );
-
     }
 
     /**
@@ -83,16 +83,14 @@ class SupportedMethodSet implements XmlSerializable, HtmlOutput {
      * If you are opening new elements, you must also close them again.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         foreach ($this->getValue() as $val) {
             $writer->startElement('{DAV:}supported-method');
             $writer->writeAttribute('name', $val);
             $writer->endElement();
         }
-
     }
 
     /**
@@ -107,15 +105,14 @@ class SupportedMethodSet implements XmlSerializable, HtmlOutput {
      * be used to construct local links.
      *
      * @param HtmlOutputHelper $html
+     *
      * @return string
      */
-    function toHtml(HtmlOutputHelper $html) {
-
+    public function toHtml(HtmlOutputHelper $html)
+    {
         return implode(
             ', ',
             array_map([$html, 'h'], $this->getValue())
         );
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedReportSet.php b/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedReportSet.php
index 96383ec96..4c25d23d9 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedReportSet.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Property/SupportedReportSet.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Property;
 
 use Sabre\DAV;
@@ -21,17 +23,17 @@ use Sabre\Xml\XmlSerializable;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class SupportedReportSet implements XmlSerializable, HtmlOutput {
-
+class SupportedReportSet implements XmlSerializable, HtmlOutput
+{
     /**
-     * List of reports
+     * List of reports.
      *
      * @var array
      */
     protected $reports = [];
 
     /**
-     * Creates the property
+     * Creates the property.
      *
      * Any reports passed in the constructor
      * should be valid report-types in clark-notation.
@@ -40,61 +42,56 @@ class SupportedReportSet implements XmlSerializable, HtmlOutput {
      *
      * @param string|string[] $reports
      */
-    function __construct($reports = null) {
-
-        if (!is_null($reports))
+    public function __construct($reports = null)
+    {
+        if (!is_null($reports)) {
             $this->addReport($reports);
-
+        }
     }
 
     /**
-     * Adds a report to this property
+     * Adds a report to this property.
      *
      * The report must be a string in clark-notation.
      * Multiple reports can be specified as an array.
      *
      * @param mixed $report
-     * @return void
      */
-    function addReport($report) {
-
-        $report = (array)$report;
+    public function addReport($report)
+    {
+        $report = (array) $report;
 
         foreach ($report as $r) {
-
-            if (!preg_match('/^{([^}]*)}(.*)$/', $r))
+            if (!preg_match('/^{([^}]*)}(.*)$/', $r)) {
                 throw new DAV\Exception('Reportname must be in clark-notation');
-
+            }
             $this->reports[] = $r;
-
         }
-
     }
 
     /**
-     * Returns the list of supported reports
+     * Returns the list of supported reports.
      *
      * @return string[]
      */
-    function getValue() {
-
+    public function getValue()
+    {
         return $this->reports;
-
     }
 
     /**
      * Returns true or false if the property contains a specific report.
      *
      * @param string $reportName
+     *
      * @return bool
      */
-    function has($reportName) {
-
+    public function has($reportName)
+    {
         return in_array(
             $reportName,
             $this->reports
         );
-
     }
 
     /**
@@ -114,10 +111,9 @@ class SupportedReportSet implements XmlSerializable, HtmlOutput {
      * If you are opening new elements, you must also close them again.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         foreach ($this->getValue() as $val) {
             $writer->startElement('{DAV:}supported-report');
             $writer->startElement('{DAV:}report');
@@ -125,7 +121,6 @@ class SupportedReportSet implements XmlSerializable, HtmlOutput {
             $writer->endElement();
             $writer->endElement();
         }
-
     }
 
     /**
@@ -140,15 +135,14 @@ class SupportedReportSet implements XmlSerializable, HtmlOutput {
      * be used to construct local links.
      *
      * @param HtmlOutputHelper $html
+     *
      * @return string
      */
-    function toHtml(HtmlOutputHelper $html) {
-
+    public function toHtml(HtmlOutputHelper $html)
+    {
         return implode(
             ', ',
             array_map([$html, 'xmlName'], $this->getValue())
         );
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Request/Lock.php b/vendor/sabre/dav/lib/DAV/Xml/Request/Lock.php
index c315a9a45..8d9348162 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Request/Lock.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Request/Lock.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Request;
 
 use Sabre\DAV\Locks\LockInfo;
@@ -18,10 +20,10 @@ use Sabre\Xml\XmlDeserializable;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Lock implements XmlDeserializable {
-
+class Lock implements XmlDeserializable
+{
     /**
-     * Owner of the lock
+     * Owner of the lock.
      *
      * @var string
      */
@@ -31,6 +33,7 @@ class Lock implements XmlDeserializable {
      * Scope of the lock.
      *
      * Either LockInfo::SHARED or LockInfo::EXCLUSIVE
+     *
      * @var int
      */
     public $scope;
@@ -54,10 +57,11 @@ class Lock implements XmlDeserializable {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $reader->pushContext();
         $reader->elementMap['{DAV:}owner'] = 'Sabre\\Xml\\Element\\XmlFragment';
 
@@ -71,11 +75,12 @@ class Lock implements XmlDeserializable {
 
         if (isset($values['{DAV:}lockscope'])) {
             foreach ($values['{DAV:}lockscope'] as $elem) {
-                if ($elem['name'] === '{DAV:}exclusive') $new->scope = LockInfo::EXCLUSIVE;
+                if ('{DAV:}exclusive' === $elem['name']) {
+                    $new->scope = LockInfo::EXCLUSIVE;
+                }
             }
         }
-        return $new;
 
+        return $new;
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Request/MkCol.php b/vendor/sabre/dav/lib/DAV/Xml/Request/MkCol.php
index 9490bf58c..7713646ea 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Request/MkCol.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Request/MkCol.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Request;
 
 use Sabre\Xml\Reader;
@@ -16,8 +18,8 @@ use Sabre\Xml\XmlDeserializable;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class MkCol implements XmlDeserializable {
-
+class MkCol implements XmlDeserializable
+{
     /**
      * The list of properties that will be set.
      *
@@ -31,10 +33,9 @@ class MkCol implements XmlDeserializable {
      *
      * @return array
      */
-    function getProperties() {
-
+    public function getProperties()
+    {
         return $this->properties;
-
     }
 
     /**
@@ -56,10 +57,11 @@ class MkCol implements XmlDeserializable {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $self = new self();
 
         $elementMap = $reader->elementMap;
@@ -70,13 +72,11 @@ class MkCol implements XmlDeserializable {
         $elems = $reader->parseInnerTree($elementMap);
 
         foreach ($elems as $elem) {
-            if ($elem['name'] === '{DAV:}set') {
+            if ('{DAV:}set' === $elem['name']) {
                 $self->properties = array_merge($self->properties, $elem['value']['{DAV:}prop']);
             }
         }
 
         return $self;
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Request/PropFind.php b/vendor/sabre/dav/lib/DAV/Xml/Request/PropFind.php
index f1b5b6fdc..b4cce423e 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Request/PropFind.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Request/PropFind.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Request;
 
 use Sabre\Xml\Element\KeyValue;
@@ -17,8 +19,8 @@ use Sabre\Xml\XmlDeserializable;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class PropFind implements XmlDeserializable {
-
+class PropFind implements XmlDeserializable
+{
     /**
      * If this is set to true, this was an 'allprop' request.
      *
@@ -27,9 +29,9 @@ class PropFind implements XmlDeserializable {
     public $allProp = false;
 
     /**
-     * The property list
+     * The property list.
      *
-     * @var null|array
+     * @var array|null
      */
     public $properties;
 
@@ -52,32 +54,28 @@ class PropFind implements XmlDeserializable {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $self = new self();
 
         $reader->pushContext();
         $reader->elementMap['{DAV:}prop'] = 'Sabre\Xml\Element\Elements';
 
         foreach (KeyValue::xmlDeserialize($reader) as $k => $v) {
-
             switch ($k) {
-                case '{DAV:}prop' :
+                case '{DAV:}prop':
                     $self->properties = $v;
                     break;
-                case '{DAV:}allprop' :
+                case '{DAV:}allprop':
                     $self->allProp = true;
-
             }
-
         }
 
         $reader->popContext();
 
         return $self;
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Request/PropPatch.php b/vendor/sabre/dav/lib/DAV/Xml/Request/PropPatch.php
index 821b9e047..55e154ec7 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Request/PropPatch.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Request/PropPatch.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Request;
 
 use Sabre\Xml\Element;
@@ -17,8 +19,8 @@ use Sabre\Xml\Writer;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class PropPatch implements Element {
-
+class PropPatch implements Element
+{
     /**
      * The list of properties that will be updated and removed.
      *
@@ -45,24 +47,20 @@ class PropPatch implements Element {
      * If you are opening new elements, you must also close them again.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         foreach ($this->properties as $propertyName => $propertyValue) {
-
             if (is_null($propertyValue)) {
-                $writer->startElement("{DAV:}remove");
+                $writer->startElement('{DAV:}remove');
                 $writer->write(['{DAV:}prop' => [$propertyName => $propertyValue]]);
                 $writer->endElement();
             } else {
-                $writer->startElement("{DAV:}set");
+                $writer->startElement('{DAV:}set');
                 $writer->write(['{DAV:}prop' => [$propertyName => $propertyValue]]);
                 $writer->endElement();
             }
-
         }
-
     }
 
     /**
@@ -84,10 +82,11 @@ class PropPatch implements Element {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $self = new self();
 
         $elementMap = $reader->elementMap;
@@ -98,21 +97,17 @@ class PropPatch implements Element {
         $elems = $reader->parseInnerTree($elementMap);
 
         foreach ($elems as $elem) {
-            if ($elem['name'] === '{DAV:}set') {
+            if ('{DAV:}set' === $elem['name']) {
                 $self->properties = array_merge($self->properties, $elem['value']['{DAV:}prop']);
             }
-            if ($elem['name'] === '{DAV:}remove') {
-
+            if ('{DAV:}remove' === $elem['name']) {
                 // Ensuring there are no values.
                 foreach ($elem['value']['{DAV:}prop'] as $remove => $value) {
                     $self->properties[$remove] = null;
                 }
-
             }
         }
 
         return $self;
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Request/ShareResource.php b/vendor/sabre/dav/lib/DAV/Xml/Request/ShareResource.php
index 526a4eb6f..e1985b8c3 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Request/ShareResource.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Request/ShareResource.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Request;
 
 use Sabre\DAV\Xml\Element\Sharee;
@@ -17,8 +19,8 @@ use Sabre\Xml\XmlDeserializable;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class ShareResource implements XmlDeserializable {
-
+class ShareResource implements XmlDeserializable
+{
     /**
      * The list of new people added or updated or removed from the share.
      *
@@ -27,14 +29,13 @@ class ShareResource implements XmlDeserializable {
     public $sharees = [];
 
     /**
-     * Constructor
+     * Constructor.
      *
      * @param Sharee[] $sharees
      */
-    function __construct(array $sharees) {
-
+    public function __construct(array $sharees)
+    {
         $this->sharees = $sharees;
-
     }
 
     /**
@@ -56,26 +57,26 @@ class ShareResource implements XmlDeserializable {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $elems = $reader->parseInnerTree([
-            '{DAV:}sharee'       => 'Sabre\DAV\Xml\Element\Sharee',
+            '{DAV:}sharee' => 'Sabre\DAV\Xml\Element\Sharee',
             '{DAV:}share-access' => 'Sabre\DAV\Xml\Property\ShareAccess',
-            '{DAV:}prop'         => 'Sabre\Xml\Deserializer\keyValue',
+            '{DAV:}prop' => 'Sabre\Xml\Deserializer\keyValue',
         ]);
 
         $sharees = [];
 
         foreach ($elems as $elem) {
-            if ($elem['name'] !== '{DAV:}sharee') continue;
+            if ('{DAV:}sharee' !== $elem['name']) {
+                continue;
+            }
             $sharees[] = $elem['value'];
-
         }
 
         return new self($sharees);
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Request/SyncCollectionReport.php b/vendor/sabre/dav/lib/DAV/Xml/Request/SyncCollectionReport.php
index 830293a01..acf0039ce 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Request/SyncCollectionReport.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Request/SyncCollectionReport.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Request;
 
 use Sabre\DAV\Exception\BadRequest;
@@ -18,8 +20,8 @@ use Sabre\Xml\XmlDeserializable;
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class SyncCollectionReport implements XmlDeserializable {
-
+class SyncCollectionReport implements XmlDeserializable
+{
     /**
      * The sync-token the client supplied for the report.
      *
@@ -44,7 +46,7 @@ class SyncCollectionReport implements XmlDeserializable {
     /**
      * The list of properties that are being requested for every change.
      *
-     * @var null|array
+     * @var array|null
      */
     public $properties;
 
@@ -67,10 +69,11 @@ class SyncCollectionReport implements XmlDeserializable {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $self = new self();
 
         $reader->pushContext();
@@ -87,36 +90,31 @@ class SyncCollectionReport implements XmlDeserializable {
 
         foreach ($required as $elem) {
             if (!array_key_exists($elem, $elems)) {
-                throw new BadRequest('The ' . $elem . ' element in the {DAV:}sync-collection report is required');
+                throw new BadRequest('The '.$elem.' element in the {DAV:}sync-collection report is required');
             }
         }
 
-
         $self->properties = $elems['{DAV:}prop'];
         $self->syncToken = $elems['{DAV:}sync-token'];
 
         if (isset($elems['{DAV:}limit'])) {
             $nresults = null;
             foreach ($elems['{DAV:}limit'] as $child) {
-                if ($child['name'] === '{DAV:}nresults') {
-                    $nresults = (int)$child['value'];
+                if ('{DAV:}nresults' === $child['name']) {
+                    $nresults = (int) $child['value'];
                 }
             }
             $self->limit = $nresults;
         }
 
         if (isset($elems['{DAV:}sync-level'])) {
-
             $value = $elems['{DAV:}sync-level'];
-            if ($value === 'infinity') {
+            if ('infinity' === $value) {
                 $value = \Sabre\DAV\Server::DEPTH_INFINITY;
             }
             $self->syncLevel = $value;
-
         }
 
         return $self;
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Response/MultiStatus.php b/vendor/sabre/dav/lib/DAV/Xml/Response/MultiStatus.php
index cf5a0453b..423d0b569 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Response/MultiStatus.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Response/MultiStatus.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml\Response;
 
 use Sabre\Xml\Element;
@@ -7,7 +9,7 @@ use Sabre\Xml\Reader;
 use Sabre\Xml\Writer;
 
 /**
- * WebDAV MultiStatus parser
+ * WebDAV MultiStatus parser.
  *
  * This class parses the {DAV:}multistatus response, as defined in:
  * https://tools.ietf.org/html/rfc4918#section-14.16
@@ -19,10 +21,10 @@ use Sabre\Xml\Writer;
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class MultiStatus implements Element {
-
+class MultiStatus implements Element
+{
     /**
-     * The responses
+     * The responses.
      *
      * @var \Sabre\DAV\Xml\Element\Response[]
      */
@@ -36,16 +38,15 @@ class MultiStatus implements Element {
     protected $syncToken;
 
     /**
-     * Constructor
+     * Constructor.
      *
      * @param \Sabre\DAV\Xml\Element\Response[] $responses
-     * @param string $syncToken
+     * @param string                            $syncToken
      */
-    function __construct(array $responses, $syncToken = null) {
-
+    public function __construct(array $responses, $syncToken = null)
+    {
         $this->responses = $responses;
         $this->syncToken = $syncToken;
-
     }
 
     /**
@@ -53,10 +54,9 @@ class MultiStatus implements Element {
      *
      * @return \Sabre\DAV\Xml\Element\Response[]
      */
-    function getResponses() {
-
+    public function getResponses()
+    {
         return $this->responses;
-
     }
 
     /**
@@ -64,10 +64,9 @@ class MultiStatus implements Element {
      *
      * @return string|null
      */
-    function getSyncToken() {
-
+    public function getSyncToken()
+    {
         return $this->syncToken;
-
     }
 
     /**
@@ -83,17 +82,15 @@ class MultiStatus implements Element {
      * responsible for closing them.
      *
      * @param Writer $writer
-     * @return void
      */
-    function xmlSerialize(Writer $writer) {
-
+    public function xmlSerialize(Writer $writer)
+    {
         foreach ($this->getResponses() as $response) {
             $writer->writeElement('{DAV:}response', $response);
         }
         if ($syncToken = $this->getSyncToken()) {
             $writer->writeElement('{DAV:}sync-token', $syncToken);
         }
-
     }
 
     /**
@@ -115,10 +112,11 @@ class MultiStatus implements Element {
      * the next element.
      *
      * @param Reader $reader
+     *
      * @return mixed
      */
-    static function xmlDeserialize(Reader $reader) {
-
+    public static function xmlDeserialize(Reader $reader)
+    {
         $elementMap = $reader->elementMap;
         $elementMap['{DAV:}prop'] = 'Sabre\\DAV\\Xml\\Element\\Prop';
         $elements = $reader->parseInnerTree($elementMap);
@@ -126,17 +124,17 @@ class MultiStatus implements Element {
         $responses = [];
         $syncToken = null;
 
-        if ($elements) foreach ($elements as $elem) {
-            if ($elem['name'] === '{DAV:}response') {
-                $responses[] = $elem['value'];
-            }
-            if ($elem['name'] === '{DAV:}sync-token') {
-                $syncToken = $elem['value'];
+        if ($elements) {
+            foreach ($elements as $elem) {
+                if ('{DAV:}response' === $elem['name']) {
+                    $responses[] = $elem['value'];
+                }
+                if ('{DAV:}sync-token' === $elem['name']) {
+                    $syncToken = $elem['value'];
+                }
             }
         }
 
         return new self($responses, $syncToken);
-
     }
-
 }
diff --git a/vendor/sabre/dav/lib/DAV/Xml/Service.php b/vendor/sabre/dav/lib/DAV/Xml/Service.php
index f41ed984a..4406b022d 100644
--- a/vendor/sabre/dav/lib/DAV/Xml/Service.php
+++ b/vendor/sabre/dav/lib/DAV/Xml/Service.php
@@ -1,16 +1,18 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Sabre\DAV\Xml;
 
 /**
- * XML service for WebDAV
+ * XML service for WebDAV.
  *
  * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
  * @author Evert Pot (http://evertpot.com/)
  * @license http://sabre.io/license/ Modified BSD License
  */
-class Service extends \Sabre\Xml\Service {
-
+class Service extends \Sabre\Xml\Service
+{
     /**
      * This is a list of XML elements that we automatically map to PHP classes.
      *
@@ -19,16 +21,15 @@ class Service extends \Sabre\Xml\Service {
      */
     public $elementMap = [
         '{DAV:}multistatus' => 'Sabre\\DAV\\Xml\\Response\\MultiStatus',
-        '{DAV:}response'    => 'Sabre\\DAV\\Xml\\Element\\Response',
+        '{DAV:}response' => 'Sabre\\DAV\\Xml\\Element\\Response',
 
         // Requests
-        '{DAV:}propfind'       => 'Sabre\\DAV\\Xml\\Request\\PropFind',
+        '{DAV:}propfind' => 'Sabre\\DAV\\Xml\\Request\\PropFind',
         '{DAV:}propertyupdate' => 'Sabre\\DAV\\Xml\\Request\\PropPatch',
-        '{DAV:}mkcol'          => 'Sabre\\DAV\\Xml\\Request\\MkCol',
+        '{DAV:}mkcol' => 'Sabre\\DAV\\Xml\\Request\\MkCol',
 
         // Properties
         '{DAV:}resourcetype' => 'Sabre\\DAV\\Xml\\Property\\ResourceType',
-
     ];
 
     /**
@@ -40,8 +41,7 @@ class Service extends \Sabre\Xml\Service {
      * @var array
      */
     public $namespaceMap = [
-        'DAV:'                   => 'd',
+        'DAV:' => 'd',
         'http://sabredav.org/ns' => 's',
     ];
-
 }