* add phpunit as a dev dependency

 * add some basic tests for UrlHelper::rewrite_relative()
 * fix UrlHelper::rewrite_relative() to work better on non-absolute
   relative URL paths

30 files changed, 1525 insertions, 0 deletions

diff --git a/vendor/myclabs/deep-copy/.github/FUNDING.yml b/vendor/myclabs/deep-copy/.github/FUNDING.yml
new file mode 100644
index 000000000..b8da664dd
--- /dev/null
+++ b/vendor/myclabs/deep-copy/.github/FUNDING.yml
@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: "packagist/myclabs/deep-copy"
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
diff --git a/vendor/myclabs/deep-copy/.github/workflows/ci.yaml b/vendor/myclabs/deep-copy/.github/workflows/ci.yaml
new file mode 100644
index 000000000..eac2812e3
--- /dev/null
+++ b/vendor/myclabs/deep-copy/.github/workflows/ci.yaml
@@ -0,0 +1,101 @@
+name: "Continuous Integration"
+
+on:
+  - pull_request
+  - push
+
+env:
+  COMPOSER_ROOT_VERSION: 1.99
+
+jobs:
+  composer-json-lint:
+    name: "Lint composer.json"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        php-version:
+          - "8.1"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          coverage: "none"
+          php-version: "${{ matrix.php-version }}"
+          tools: composer-normalize
+
+      - name: "Get composer cache directory"
+        id: composercache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: "Cache dependencies"
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composercache.outputs.dir }}
+          key: ${{ runner.os }}-php-${{ matrix.php-version }}-${{ matrix.dependencies }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: ${{ runner.os }}-php-${{ matrix.php-version }}-${{ matrix.dependencies }}-composer-
+
+      - name: "Install dependencies"
+        run: "composer update --no-interaction --no-progress"
+
+      - name: "Validate composer.json"
+        run: "composer validate --strict"
+
+      - name: "Normalize composer.json"
+        run: "composer-normalize --dry-run"
+
+  tests:
+    name: "Tests"
+
+    runs-on: "ubuntu-latest"
+
+    strategy:
+      matrix:
+        php-version:
+          - "7.1"
+          - "7.2"
+          - "7.3"
+          - "7.4"
+          - "8.0"
+          - "8.1"
+        dependencies:
+          - "lowest"
+          - "highest"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          php-version: "${{ matrix.php-version }}"
+          ini-values: zend.assertions=1
+
+      - name: "Get composer cache directory"
+        id: composercache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: "Cache dependencies"
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composercache.outputs.dir }}
+          key: ${{ runner.os }}-php-${{ matrix.php-version }}-${{ matrix.dependencies }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: ${{ runner.os }}-php-${{ matrix.php-version }}-${{ matrix.dependencies }}-composer-
+
+      - name: "Install lowest dependencies"
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: "composer update --no-interaction --no-progress --prefer-lowest"
+
+      - name: "Install highest dependencies"
+        if: ${{ matrix.dependencies == 'highest' }}
+        run: "composer update --no-interaction --no-progress"
+
+      - name: "Run tests"
+        timeout-minutes: 3
+        run: "vendor/bin/phpunit"
diff --git a/vendor/myclabs/deep-copy/LICENSE b/vendor/myclabs/deep-copy/LICENSE
new file mode 100644
index 000000000..c3e835001
--- /dev/null
+++ b/vendor/myclabs/deep-copy/LICENSE
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 My C-Sense
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/myclabs/deep-copy/README.md b/vendor/myclabs/deep-copy/README.md
new file mode 100644
index 000000000..503e93dff
--- /dev/null
+++ b/vendor/myclabs/deep-copy/README.md
@@ -0,0 +1,373 @@
+# DeepCopy
+
+DeepCopy helps you create deep copies (clones) of your objects. It is designed to handle cycles in the association graph.
+
+[![Total Downloads](https://poser.pugx.org/myclabs/deep-copy/downloads.svg)](https://packagist.org/packages/myclabs/deep-copy)
+[![Integrate](https://github.com/myclabs/DeepCopy/workflows/ci/badge.svg?branch=1.x)](https://github.com/myclabs/DeepCopy/actions)
+
+## Table of Contents
+
+1. [How](#how)
+1. [Why](#why)
+    1. [Using simply `clone`](#using-simply-clone)
+    1. [Overriding `__clone()`](#overriding-__clone)
+    1. [With `DeepCopy`](#with-deepcopy)
+1. [How it works](#how-it-works)
+1. [Going further](#going-further)
+    1. [Matchers](#matchers)
+        1. [Property name](#property-name)
+        1. [Specific property](#specific-property)
+        1. [Type](#type)
+    1. [Filters](#filters)
+        1. [`SetNullFilter`](#setnullfilter-filter)
+        1. [`KeepFilter`](#keepfilter-filter)
+        1. [`DoctrineCollectionFilter`](#doctrinecollectionfilter-filter)
+        1. [`DoctrineEmptyCollectionFilter`](#doctrineemptycollectionfilter-filter)
+        1. [`DoctrineProxyFilter`](#doctrineproxyfilter-filter)
+        1. [`ReplaceFilter`](#replacefilter-type-filter)
+        1. [`ShallowCopyFilter`](#shallowcopyfilter-type-filter)
+1. [Edge cases](#edge-cases)
+1. [Contributing](#contributing)
+    1. [Tests](#tests)
+
+
+## How?
+
+Install with Composer:
+
+```
+composer require myclabs/deep-copy
+```
+
+Use it:
+
+```php
+use DeepCopy\DeepCopy;
+
+$copier = new DeepCopy();
+$myCopy = $copier->copy($myObject);
+```
+
+
+## Why?
+
+- How do you create copies of your objects?
+
+```php
+$myCopy = clone $myObject;
+```
+
+- How do you create **deep** copies of your objects (i.e. copying also all the objects referenced in the properties)?
+
+You use [`__clone()`](http://www.php.net/manual/en/language.oop5.cloning.php#object.clone) and implement the behavior
+yourself.
+
+- But how do you handle **cycles** in the association graph?
+
+Now you're in for a big mess :(
+
+![association graph](doc/graph.png)
+
+
+### Using simply `clone`
+
+![Using clone](doc/clone.png)
+
+
+### Overriding `__clone()`
+
+![Overriding __clone](doc/deep-clone.png)
+
+
+### With `DeepCopy`
+
+![With DeepCopy](doc/deep-copy.png)
+
+
+## How it works
+
+DeepCopy recursively traverses all the object's properties and clones them. To avoid cloning the same object twice it
+keeps a hash map of all instances and thus preserves the object graph.
+
+To use it:
+
+```php
+use function DeepCopy\deep_copy;
+
+$copy = deep_copy($var);
+```
+
+Alternatively, you can create your own `DeepCopy` instance to configure it differently for example:
+
+```php
+use DeepCopy\DeepCopy;
+
+$copier = new DeepCopy(true);
+
+$copy = $copier->copy($var);
+```
+
+You may want to roll your own deep copy function:
+
+```php
+namespace Acme;
+
+use DeepCopy\DeepCopy;
+
+function deep_copy($var)
+{
+    static $copier = null;
+    
+    if (null === $copier) {
+        $copier = new DeepCopy(true);
+    }
+    
+    return $copier->copy($var);
+}
+```
+
+
+## Going further
+
+You can add filters to customize the copy process.
+
+The method to add a filter is `DeepCopy\DeepCopy::addFilter($filter, $matcher)`,
+with `$filter` implementing `DeepCopy\Filter\Filter`
+and `$matcher` implementing `DeepCopy\Matcher\Matcher`.
+
+We provide some generic filters and matchers.
+
+
+### Matchers
+
+  - `DeepCopy\Matcher` applies on a object attribute.
+  - `DeepCopy\TypeMatcher` applies on any element found in graph, including array elements.
+
+
+#### Property name
+
+The `PropertyNameMatcher` will match a property by its name:
+
+```php
+use DeepCopy\Matcher\PropertyNameMatcher;
+
+// Will apply a filter to any property of any objects named "id"
+$matcher = new PropertyNameMatcher('id');
+```
+
+
+#### Specific property
+
+The `PropertyMatcher` will match a specific property of a specific class:
+
+```php
+use DeepCopy\Matcher\PropertyMatcher;
+
+// Will apply a filter to the property "id" of any objects of the class "MyClass"
+$matcher = new PropertyMatcher('MyClass', 'id');
+```
+
+
+#### Type
+
+The `TypeMatcher` will match any element by its type (instance of a class or any value that could be parameter of
+[gettype()](http://php.net/manual/en/function.gettype.php) function):
+
+```php
+use DeepCopy\TypeMatcher\TypeMatcher;
+
+// Will apply a filter to any object that is an instance of Doctrine\Common\Collections\Collection
+$matcher = new TypeMatcher('Doctrine\Common\Collections\Collection');
+```
+
+
+### Filters
+
+- `DeepCopy\Filter` applies a transformation to the object attribute matched by `DeepCopy\Matcher`
+- `DeepCopy\TypeFilter` applies a transformation to any element matched by `DeepCopy\TypeMatcher`
+
+
+#### `SetNullFilter` (filter)
+
+Let's say for example that you are copying a database record (or a Doctrine entity), so you want the copy not to have
+any ID:
+
+```php
+use DeepCopy\DeepCopy;
+use DeepCopy\Filter\SetNullFilter;
+use DeepCopy\Matcher\PropertyNameMatcher;
+
+$object = MyClass::load(123);
+echo $object->id; // 123
+
+$copier = new DeepCopy();
+$copier->addFilter(new SetNullFilter(), new PropertyNameMatcher('id'));
+
+$copy = $copier->copy($object);
+
+echo $copy->id; // null
+```
+
+
+#### `KeepFilter` (filter)
+
+If you want a property to remain untouched (for example, an association to an object):
+
+```php
+use DeepCopy\DeepCopy;
+use DeepCopy\Filter\KeepFilter;
+use DeepCopy\Matcher\PropertyMatcher;
+
+$copier = new DeepCopy();
+$copier->addFilter(new KeepFilter(), new PropertyMatcher('MyClass', 'category'));
+
+$copy = $copier->copy($object);
+// $copy->category has not been touched
+```
+
+
+#### `DoctrineCollectionFilter` (filter)
+
+If you use Doctrine and want to copy an entity, you will need to use the `DoctrineCollectionFilter`:
+
+```php
+use DeepCopy\DeepCopy;
+use DeepCopy\Filter\Doctrine\DoctrineCollectionFilter;
+use DeepCopy\Matcher\PropertyTypeMatcher;
+
+$copier = new DeepCopy();
+$copier->addFilter(new DoctrineCollectionFilter(), new PropertyTypeMatcher('Doctrine\Common\Collections\Collection'));
+
+$copy = $copier->copy($object);
+```
+
+
+#### `DoctrineEmptyCollectionFilter` (filter)
+
+If you use Doctrine and want to copy an entity who contains a `Collection` that you want to be reset, you can use the
+`DoctrineEmptyCollectionFilter`
+
+```php
+use DeepCopy\DeepCopy;
+use DeepCopy\Filter\Doctrine\DoctrineEmptyCollectionFilter;
+use DeepCopy\Matcher\PropertyMatcher;
+
+$copier = new DeepCopy();
+$copier->addFilter(new DoctrineEmptyCollectionFilter(), new PropertyMatcher('MyClass', 'myProperty'));
+
+$copy = $copier->copy($object);
+
+// $copy->myProperty will return an empty collection
+```
+
+
+#### `DoctrineProxyFilter` (filter)
+
+If you use Doctrine and use cloning on lazy loaded entities, you might encounter errors mentioning missing fields on a
+Doctrine proxy class (...\\\_\_CG\_\_\Proxy).
+You can use the `DoctrineProxyFilter` to load the actual entity behind the Doctrine proxy class.
+**Make sure, though, to put this as one of your very first filters in the filter chain so that the entity is loaded
+before other filters are applied!**
+
+```php
+use DeepCopy\DeepCopy;
+use DeepCopy\Filter\Doctrine\DoctrineProxyFilter;
+use DeepCopy\Matcher\Doctrine\DoctrineProxyMatcher;
+
+$copier = new DeepCopy();
+$copier->addFilter(new DoctrineProxyFilter(), new DoctrineProxyMatcher());
+
+$copy = $copier->copy($object);
+
+// $copy should now contain a clone of all entities, including those that were not yet fully loaded.
+```
+
+
+#### `ReplaceFilter` (type filter)
+
+1. If you want to replace the value of a property:
+
+```php
+use DeepCopy\DeepCopy;
+use DeepCopy\Filter\ReplaceFilter;
+use DeepCopy\Matcher\PropertyMatcher;
+
+$copier = new DeepCopy();
+$callback = function ($currentValue) {
+  return $currentValue . ' (copy)'
+};
+$copier->addFilter(new ReplaceFilter($callback), new PropertyMatcher('MyClass', 'title'));
+
+$copy = $copier->copy($object);
+
+// $copy->title will contain the data returned by the callback, e.g. 'The title (copy)'
+```
+
+2. If you want to replace whole element:
+
+```php
+use DeepCopy\DeepCopy;
+use DeepCopy\TypeFilter\ReplaceFilter;
+use DeepCopy\TypeMatcher\TypeMatcher;
+
+$copier = new DeepCopy();
+$callback = function (MyClass $myClass) {
+  return get_class($myClass);
+};
+$copier->addTypeFilter(new ReplaceFilter($callback), new TypeMatcher('MyClass'));
+
+$copy = $copier->copy([new MyClass, 'some string', new MyClass]);
+
+// $copy will contain ['MyClass', 'some string', 'MyClass']
+```
+
+
+The `$callback` parameter of the `ReplaceFilter` constructor accepts any PHP callable.
+
+
+#### `ShallowCopyFilter` (type filter)
+
+Stop *DeepCopy* from recursively copying element, using standard `clone` instead:
+
+```php
+use DeepCopy\DeepCopy;
+use DeepCopy\TypeFilter\ShallowCopyFilter;
+use DeepCopy\TypeMatcher\TypeMatcher;
+use Mockery as m;
+
+$this->deepCopy = new DeepCopy();
+$this->deepCopy->addTypeFilter(
+	new ShallowCopyFilter,
+	new TypeMatcher(m\MockInterface::class)
+);
+
+$myServiceWithMocks = new MyService(m::mock(MyDependency1::class), m::mock(MyDependency2::class));
+// All mocks will be just cloned, not deep copied
+```
+
+
+## Edge cases
+
+The following structures cannot be deep-copied with PHP Reflection. As a result they are shallow cloned and filters are
+not applied. There is two ways for you to handle them:
+
+- Implement your own `__clone()` method
+- Use a filter with a type matcher
+
+
+## Contributing
+
+DeepCopy is distributed under the MIT license.
+
+
+### Tests
+
+Running the tests is simple:
+
+```php
+vendor/bin/phpunit
+```
+
+### Support
+
+Get professional support via [the Tidelift Subscription](https://tidelift.com/subscription/pkg/packagist-myclabs-deep-copy?utm_source=packagist-myclabs-deep-copy&utm_medium=referral&utm_campaign=readme).
diff --git a/vendor/myclabs/deep-copy/composer.json b/vendor/myclabs/deep-copy/composer.json
new file mode 100644
index 000000000..66fb34a58
--- /dev/null
+++ b/vendor/myclabs/deep-copy/composer.json
@@ -0,0 +1,42 @@
+{
+    "name": "myclabs/deep-copy",
+    "description": "Create deep copies (clones) of your objects",
+    "license": "MIT",
+    "type": "library",
+    "keywords": [
+        "clone",
+        "copy",
+        "duplicate",
+        "object",
+        "object graph"
+    ],
+    "require": {
+        "php": "^7.1 || ^8.0"
+    },
+    "require-dev": {
+        "doctrine/collections": "^1.6.8",
+        "doctrine/common": "^2.13.3 || ^3.2.2",
+        "phpunit/phpunit": "^7.5.20 || ^8.5.23 || ^9.5.13"
+    },
+    "conflict": {
+        "doctrine/collections": "<1.6.8",
+        "doctrine/common": "<2.13.3 || >=3,<3.2.2"
+    },
+    "autoload": {
+        "psr-4": {
+            "DeepCopy\\": "src/DeepCopy/"
+        },
+        "files": [
+            "src/DeepCopy/deep_copy.php"
+        ]
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "DeepCopy\\": "fixtures/",
+            "DeepCopyTest\\": "tests/DeepCopyTest/"
+        }
+    },
+    "config": {
+        "sort-packages": true
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/DeepCopy.php b/vendor/myclabs/deep-copy/src/DeepCopy/DeepCopy.php
new file mode 100644
index 000000000..5e68c64e4
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/DeepCopy.php
@@ -0,0 +1,303 @@
+<?php
+
+namespace DeepCopy;
+
+use ArrayObject;
+use DateInterval;
+use DateTimeInterface;
+use DateTimeZone;
+use DeepCopy\Exception\CloneException;
+use DeepCopy\Filter\Filter;
+use DeepCopy\Matcher\Matcher;
+use DeepCopy\Reflection\ReflectionHelper;
+use DeepCopy\TypeFilter\Date\DateIntervalFilter;
+use DeepCopy\TypeFilter\Spl\ArrayObjectFilter;
+use DeepCopy\TypeFilter\Spl\SplDoublyLinkedListFilter;
+use DeepCopy\TypeFilter\TypeFilter;
+use DeepCopy\TypeMatcher\TypeMatcher;
+use ReflectionObject;
+use ReflectionProperty;
+use SplDoublyLinkedList;
+
+/**
+ * @final
+ */
+class DeepCopy
+{
+    /**
+     * @var object[] List of objects copied.
+     */
+    private $hashMap = [];
+
+    /**
+     * Filters to apply.
+     *
+     * @var array Array of ['filter' => Filter, 'matcher' => Matcher] pairs.
+     */
+    private $filters = [];
+
+    /**
+     * Type Filters to apply.
+     *
+     * @var array Array of ['filter' => Filter, 'matcher' => Matcher] pairs.
+     */
+    private $typeFilters = [];
+
+    /**
+     * @var bool
+     */
+    private $skipUncloneable = false;
+
+    /**
+     * @var bool
+     */
+    private $useCloneMethod;
+
+    /**
+     * @param bool $useCloneMethod   If set to true, when an object implements the __clone() function, it will be used
+     *                               instead of the regular deep cloning.
+     */
+    public function __construct($useCloneMethod = false)
+    {
+        $this->useCloneMethod = $useCloneMethod;
+
+        $this->addTypeFilter(new ArrayObjectFilter($this), new TypeMatcher(ArrayObject::class));
+        $this->addTypeFilter(new DateIntervalFilter(), new TypeMatcher(DateInterval::class));
+        $this->addTypeFilter(new SplDoublyLinkedListFilter($this), new TypeMatcher(SplDoublyLinkedList::class));
+    }
+
+    /**
+     * If enabled, will not throw an exception when coming across an uncloneable property.
+     *
+     * @param $skipUncloneable
+     *
+     * @return $this
+     */
+    public function skipUncloneable($skipUncloneable = true)
+    {
+        $this->skipUncloneable = $skipUncloneable;
+
+        return $this;
+    }
+
+    /**
+     * Deep copies the given object.
+     *
+     * @param mixed $object
+     *
+     * @return mixed
+     */
+    public function copy($object)
+    {
+        $this->hashMap = [];
+
+        return $this->recursiveCopy($object);
+    }
+
+    public function addFilter(Filter $filter, Matcher $matcher)
+    {
+        $this->filters[] = [
+            'matcher' => $matcher,
+            'filter'  => $filter,
+        ];
+    }
+
+    public function prependFilter(Filter $filter, Matcher $matcher)
+    {
+        array_unshift($this->filters, [
+            'matcher' => $matcher,
+            'filter'  => $filter,
+        ]);
+    }
+
+    public function addTypeFilter(TypeFilter $filter, TypeMatcher $matcher)
+    {
+        $this->typeFilters[] = [
+            'matcher' => $matcher,
+            'filter'  => $filter,
+        ];
+    }
+
+    private function recursiveCopy($var)
+    {
+        // Matches Type Filter
+        if ($filter = $this->getFirstMatchedTypeFilter($this->typeFilters, $var)) {
+            return $filter->apply($var);
+        }
+
+        // Resource
+        if (is_resource($var)) {
+            return $var;
+        }
+
+        // Array
+        if (is_array($var)) {
+            return $this->copyArray($var);
+        }
+
+        // Scalar
+        if (! is_object($var)) {
+            return $var;
+        }
+
+        // Enum
+        if (PHP_VERSION_ID >= 80100 && enum_exists(get_class($var))) {
+            return $var;
+        }
+
+        // Object
+        return $this->copyObject($var);
+    }
+
+    /**
+     * Copy an array
+     * @param array $array
+     * @return array
+     */
+    private function copyArray(array $array)
+    {
+        foreach ($array as $key => $value) {
+            $array[$key] = $this->recursiveCopy($value);
+        }
+
+        return $array;
+    }
+
+    /**
+     * Copies an object.
+     *
+     * @param object $object
+     *
+     * @throws CloneException
+     *
+     * @return object
+     */
+    private function copyObject($object)
+    {
+        $objectHash = spl_object_hash($object);
+
+        if (isset($this->hashMap[$objectHash])) {
+            return $this->hashMap[$objectHash];
+        }
+
+        $reflectedObject = new ReflectionObject($object);
+        $isCloneable = $reflectedObject->isCloneable();
+
+        if (false === $isCloneable) {
+            if ($this->skipUncloneable) {
+                $this->hashMap[$objectHash] = $object;
+
+                return $object;
+            }
+
+            throw new CloneException(
+                sprintf(
+                    'The class "%s" is not cloneable.',
+                    $reflectedObject->getName()
+                )
+            );
+        }
+
+        $newObject = clone $object;
+        $this->hashMap[$objectHash] = $newObject;
+
+        if ($this->useCloneMethod && $reflectedObject->hasMethod('__clone')) {
+            return $newObject;
+        }
+
+        if ($newObject instanceof DateTimeInterface || $newObject instanceof DateTimeZone) {
+            return $newObject;
+        }
+
+        foreach (ReflectionHelper::getProperties($reflectedObject) as $property) {
+            $this->copyObjectProperty($newObject, $property);
+        }
+
+        return $newObject;
+    }
+
+    private function copyObjectProperty($object, ReflectionProperty $property)
+    {
+        // Ignore static properties
+        if ($property->isStatic()) {
+            return;
+        }
+
+        // Apply the filters
+        foreach ($this->filters as $item) {
+            /** @var Matcher $matcher */
+            $matcher = $item['matcher'];
+            /** @var Filter $filter */
+            $filter = $item['filter'];
+
+            if ($matcher->matches($object, $property->getName())) {
+                $filter->apply(
+                    $object,
+                    $property->getName(),
+                    function ($object) {
+                        return $this->recursiveCopy($object);
+                    }
+                );
+
+                // If a filter matches, we stop processing this property
+                return;
+            }
+        }
+
+        $property->setAccessible(true);
+
+        // Ignore uninitialized properties (for PHP >7.4)
+        if (method_exists($property, 'isInitialized') && !$property->isInitialized($object)) {
+            return;
+        }
+
+        $propertyValue = $property->getValue($object);
+
+        // Copy the property
+        $property->setValue($object, $this->recursiveCopy($propertyValue));
+    }
+
+    /**
+     * Returns first filter that matches variable, `null` if no such filter found.
+     *
+     * @param array $filterRecords Associative array with 2 members: 'filter' with value of type {@see TypeFilter} and
+     *                             'matcher' with value of type {@see TypeMatcher}
+     * @param mixed $var
+     *
+     * @return TypeFilter|null
+     */
+    private function getFirstMatchedTypeFilter(array $filterRecords, $var)
+    {
+        $matched = $this->first(
+            $filterRecords,
+            function (array $record) use ($var) {
+                /* @var TypeMatcher $matcher */
+                $matcher = $record['matcher'];
+
+                return $matcher->matches($var);
+            }
+        );
+
+        return isset($matched) ? $matched['filter'] : null;
+    }
+
+    /**
+     * Returns first element that matches predicate, `null` if no such element found.
+     *
+     * @param array    $elements Array of ['filter' => Filter, 'matcher' => Matcher] pairs.
+     * @param callable $predicate Predicate arguments are: element.
+     *
+     * @return array|null Associative array with 2 members: 'filter' with value of type {@see TypeFilter} and 'matcher'
+     *                    with value of type {@see TypeMatcher} or `null`.
+     */
+    private function first(array $elements, callable $predicate)
+    {
+        foreach ($elements as $element) {
+            if (call_user_func($predicate, $element)) {
+                return $element;
+            }
+        }
+
+        return null;
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Exception/CloneException.php b/vendor/myclabs/deep-copy/src/DeepCopy/Exception/CloneException.php
new file mode 100644
index 000000000..c046706a2
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Exception/CloneException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace DeepCopy\Exception;
+
+use UnexpectedValueException;
+
+class CloneException extends UnexpectedValueException
+{
+} 
\ No newline at end of file
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Exception/PropertyException.php b/vendor/myclabs/deep-copy/src/DeepCopy/Exception/PropertyException.php
new file mode 100644
index 000000000..9702101a9
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Exception/PropertyException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace DeepCopy\Exception;
+
+use ReflectionException;
+
+class PropertyException extends ReflectionException
+{
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineCollectionFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineCollectionFilter.php
new file mode 100644
index 000000000..e6d937710
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineCollectionFilter.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace DeepCopy\Filter\Doctrine;
+
+use DeepCopy\Filter\Filter;
+use DeepCopy\Reflection\ReflectionHelper;
+
+/**
+ * @final
+ */
+class DoctrineCollectionFilter implements Filter
+{
+    /**
+     * Copies the object property doctrine collection.
+     *
+     * {@inheritdoc}
+     */
+    public function apply($object, $property, $objectCopier)
+    {
+        $reflectionProperty = ReflectionHelper::getProperty($object, $property);
+
+        $reflectionProperty->setAccessible(true);
+        $oldCollection = $reflectionProperty->getValue($object);
+
+        $newCollection = $oldCollection->map(
+            function ($item) use ($objectCopier) {
+                return $objectCopier($item);
+            }
+        );
+
+        $reflectionProperty->setValue($object, $newCollection);
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineEmptyCollectionFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineEmptyCollectionFilter.php
new file mode 100644
index 000000000..7b33fd547
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineEmptyCollectionFilter.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace DeepCopy\Filter\Doctrine;
+
+use DeepCopy\Filter\Filter;
+use DeepCopy\Reflection\ReflectionHelper;
+use Doctrine\Common\Collections\ArrayCollection;
+
+/**
+ * @final
+ */
+class DoctrineEmptyCollectionFilter implements Filter
+{
+    /**
+     * Sets the object property to an empty doctrine collection.
+     *
+     * @param object   $object
+     * @param string   $property
+     * @param callable $objectCopier
+     */
+    public function apply($object, $property, $objectCopier)
+    {
+        $reflectionProperty = ReflectionHelper::getProperty($object, $property);
+        $reflectionProperty->setAccessible(true);
+
+        $reflectionProperty->setValue($object, new ArrayCollection());
+    }
+} 
\ No newline at end of file
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineProxyFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineProxyFilter.php
new file mode 100644
index 000000000..8bee8f769
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Doctrine/DoctrineProxyFilter.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace DeepCopy\Filter\Doctrine;
+
+use DeepCopy\Filter\Filter;
+
+/**
+ * @final
+ */
+class DoctrineProxyFilter implements Filter
+{
+    /**
+     * Triggers the magic method __load() on a Doctrine Proxy class to load the
+     * actual entity from the database.
+     *
+     * {@inheritdoc}
+     */
+    public function apply($object, $property, $objectCopier)
+    {
+        $object->__load();
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Filter.php b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Filter.php
new file mode 100644
index 000000000..85ba18ce1
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/Filter.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace DeepCopy\Filter;
+
+/**
+ * Filter to apply to a property while copying an object
+ */
+interface Filter
+{
+    /**
+     * Applies the filter to the object.
+     *
+     * @param object   $object
+     * @param string   $property
+     * @param callable $objectCopier
+     */
+    public function apply($object, $property, $objectCopier);
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Filter/KeepFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/KeepFilter.php
new file mode 100644
index 000000000..4b11a081b
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/KeepFilter.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace DeepCopy\Filter;
+
+class KeepFilter implements Filter
+{
+    /**
+     * Keeps the value of the object property.
+     *
+     * {@inheritdoc}
+     */
+    public function apply($object, $property, $objectCopier)
+    {
+        // Nothing to do
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Filter/ReplaceFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/ReplaceFilter.php
new file mode 100644
index 000000000..7aca593bb
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/ReplaceFilter.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace DeepCopy\Filter;
+
+use DeepCopy\Reflection\ReflectionHelper;
+
+/**
+ * @final
+ */
+class ReplaceFilter implements Filter
+{
+    /**
+     * @var callable
+     */
+    protected $callback;
+
+    /**
+     * @param callable $callable Will be called to get the new value for each property to replace
+     */
+    public function __construct(callable $callable)
+    {
+        $this->callback = $callable;
+    }
+
+    /**
+     * Replaces the object property by the result of the callback called with the object property.
+     *
+     * {@inheritdoc}
+     */
+    public function apply($object, $property, $objectCopier)
+    {
+        $reflectionProperty = ReflectionHelper::getProperty($object, $property);
+        $reflectionProperty->setAccessible(true);
+
+        $value = call_user_func($this->callback, $reflectionProperty->getValue($object));
+
+        $reflectionProperty->setValue($object, $value);
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Filter/SetNullFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/SetNullFilter.php
new file mode 100644
index 000000000..bea86b884
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Filter/SetNullFilter.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace DeepCopy\Filter;
+
+use DeepCopy\Reflection\ReflectionHelper;
+
+/**
+ * @final
+ */
+class SetNullFilter implements Filter
+{
+    /**
+     * Sets the object property to null.
+     *
+     * {@inheritdoc}
+     */
+    public function apply($object, $property, $objectCopier)
+    {
+        $reflectionProperty = ReflectionHelper::getProperty($object, $property);
+
+        $reflectionProperty->setAccessible(true);
+        $reflectionProperty->setValue($object, null);
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/Doctrine/DoctrineProxyMatcher.php b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/Doctrine/DoctrineProxyMatcher.php
new file mode 100644
index 000000000..c5887b19c
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/Doctrine/DoctrineProxyMatcher.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace DeepCopy\Matcher\Doctrine;
+
+use DeepCopy\Matcher\Matcher;
+use Doctrine\Persistence\Proxy;
+
+/**
+ * @final
+ */
+class DoctrineProxyMatcher implements Matcher
+{
+    /**
+     * Matches a Doctrine Proxy class.
+     *
+     * {@inheritdoc}
+     */
+    public function matches($object, $property)
+    {
+        return $object instanceof Proxy;
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/Matcher.php b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/Matcher.php
new file mode 100644
index 000000000..d67f3cac6
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/Matcher.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace DeepCopy\Matcher;
+
+interface Matcher
+{
+    /**
+     * @param object $object
+     * @param string $property
+     *
+     * @return boolean
+     */
+    public function matches($object, $property);
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyMatcher.php b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyMatcher.php
new file mode 100644
index 000000000..073b20cb8
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyMatcher.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace DeepCopy\Matcher;
+
+/**
+ * @final
+ */
+class PropertyMatcher implements Matcher
+{
+    /**
+     * @var string
+     */
+    private $class;
+
+    /**
+     * @var string
+     */
+    private $property;
+
+    /**
+     * @param string $class    Class name
+     * @param string $property Property name
+     */
+    public function __construct($class, $property)
+    {
+        $this->class = $class;
+        $this->property = $property;
+    }
+
+    /**
+     * Matches a specific property of a specific class.
+     *
+     * {@inheritdoc}
+     */
+    public function matches($object, $property)
+    {
+        return ($object instanceof $this->class) && $property == $this->property;
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyNameMatcher.php b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyNameMatcher.php
new file mode 100644
index 000000000..c8ec0d2bc
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyNameMatcher.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace DeepCopy\Matcher;
+
+/**
+ * @final
+ */
+class PropertyNameMatcher implements Matcher
+{
+    /**
+     * @var string
+     */
+    private $property;
+
+    /**
+     * @param string $property Property name
+     */
+    public function __construct($property)
+    {
+        $this->property = $property;
+    }
+
+    /**
+     * Matches a property by its name.
+     *
+     * {@inheritdoc}
+     */
+    public function matches($object, $property)
+    {
+        return $property == $this->property;
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyTypeMatcher.php b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyTypeMatcher.php
new file mode 100644
index 000000000..c7f46908c
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Matcher/PropertyTypeMatcher.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace DeepCopy\Matcher;
+
+use DeepCopy\Reflection\ReflectionHelper;
+use ReflectionException;
+
+/**
+ * Matches a property by its type.
+ *
+ * It is recommended to use {@see DeepCopy\TypeFilter\TypeFilter} instead, as it applies on all occurrences
+ * of given type in copied context (eg. array elements), not just on object properties.
+ *
+ * @final
+ */
+class PropertyTypeMatcher implements Matcher
+{
+    /**
+     * @var string
+     */
+    private $propertyType;
+
+    /**
+     * @param string $propertyType Property type
+     */
+    public function __construct($propertyType)
+    {
+        $this->propertyType = $propertyType;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function matches($object, $property)
+    {
+        try {
+            $reflectionProperty = ReflectionHelper::getProperty($object, $property);
+        } catch (ReflectionException $exception) {
+            return false;
+        }
+
+        $reflectionProperty->setAccessible(true);
+
+        // Uninitialized properties (for PHP >7.4)
+        if (method_exists($reflectionProperty, 'isInitialized') && !$reflectionProperty->isInitialized($object)) {
+            // null instanceof $this->propertyType
+            return false;
+        }
+
+        return $reflectionProperty->getValue($object) instanceof $this->propertyType;
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/Reflection/ReflectionHelper.php b/vendor/myclabs/deep-copy/src/DeepCopy/Reflection/ReflectionHelper.php
new file mode 100644
index 000000000..742410cb2
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/Reflection/ReflectionHelper.php
@@ -0,0 +1,78 @@
+<?php
+
+namespace DeepCopy\Reflection;
+
+use DeepCopy\Exception\PropertyException;
+use ReflectionClass;
+use ReflectionException;
+use ReflectionObject;
+use ReflectionProperty;
+
+class ReflectionHelper
+{
+    /**
+     * Retrieves all properties (including private ones), from object and all its ancestors.
+     *
+     * Standard \ReflectionClass->getProperties() does not return private properties from ancestor classes.
+     *
+     * @author [email protected]
+     * @see http://php.net/manual/en/reflectionclass.getproperties.php
+     *
+     * @param ReflectionClass $ref
+     *
+     * @return ReflectionProperty[]
+     */
+    public static function getProperties(ReflectionClass $ref)
+    {
+        $props = $ref->getProperties();
+        $propsArr = array();
+
+        foreach ($props as $prop) {
+            $propertyName = $prop->getName();
+            $propsArr[$propertyName] = $prop;
+        }
+
+        if ($parentClass = $ref->getParentClass()) {
+            $parentPropsArr = self::getProperties($parentClass);
+            foreach ($propsArr as $key => $property) {
+                $parentPropsArr[$key] = $property;
+            }
+
+            return $parentPropsArr;
+        }
+
+        return $propsArr;
+    }
+
+    /**
+     * Retrieves property by name from object and all its ancestors.
+     *
+     * @param object|string $object
+     * @param string $name
+     *
+     * @throws PropertyException
+     * @throws ReflectionException
+     *
+     * @return ReflectionProperty
+     */
+    public static function getProperty($object, $name)
+    {
+        $reflection = is_object($object) ? new ReflectionObject($object) : new ReflectionClass($object);
+
+        if ($reflection->hasProperty($name)) {
+            return $reflection->getProperty($name);
+        }
+
+        if ($parentClass = $reflection->getParentClass()) {
+            return self::getProperty($parentClass->getName(), $name);
+        }
+
+        throw new PropertyException(
+            sprintf(
+                'The class "%s" doesn\'t have a property with the given name: "%s".',
+                is_object($object) ? get_class($object) : $object,
+                $name
+            )
+        );
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Date/DateIntervalFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Date/DateIntervalFilter.php
new file mode 100644
index 000000000..becd1cfff
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Date/DateIntervalFilter.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace DeepCopy\TypeFilter\Date;
+
+use DateInterval;
+use DeepCopy\TypeFilter\TypeFilter;
+
+/**
+ * @final
+ *
+ * @deprecated Will be removed in 2.0. This filter will no longer be necessary in PHP 7.1+.
+ */
+class DateIntervalFilter implements TypeFilter
+{
+
+    /**
+     * {@inheritdoc}
+     *
+     * @param DateInterval $element
+     *
+     * @see http://news.php.net/php.bugs/205076
+     */
+    public function apply($element)
+    {
+        $copy = new DateInterval('P0D');
+
+        foreach ($element as $propertyName => $propertyValue) {
+            $copy->{$propertyName} = $propertyValue;
+        }
+
+        return $copy;
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/ReplaceFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/ReplaceFilter.php
new file mode 100644
index 000000000..164f8b8e2
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/ReplaceFilter.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace DeepCopy\TypeFilter;
+
+/**
+ * @final
+ */
+class ReplaceFilter implements TypeFilter
+{
+    /**
+     * @var callable
+     */
+    protected $callback;
+
+    /**
+     * @param callable $callable Will be called to get the new value for each element to replace
+     */
+    public function __construct(callable $callable)
+    {
+        $this->callback = $callable;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply($element)
+    {
+        return call_user_func($this->callback, $element);
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/ShallowCopyFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/ShallowCopyFilter.php
new file mode 100644
index 000000000..a5fbd7a2b
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/ShallowCopyFilter.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace DeepCopy\TypeFilter;
+
+/**
+ * @final
+ */
+class ShallowCopyFilter implements TypeFilter
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function apply($element)
+    {
+        return clone $element;
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/ArrayObjectFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/ArrayObjectFilter.php
new file mode 100644
index 000000000..178460179
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/ArrayObjectFilter.php
@@ -0,0 +1,36 @@
+<?php
+namespace DeepCopy\TypeFilter\Spl;
+
+use DeepCopy\DeepCopy;
+use DeepCopy\TypeFilter\TypeFilter;
+
+/**
+ * In PHP 7.4 the storage of an ArrayObject isn't returned as
+ * ReflectionProperty. So we deep copy its array copy.
+ */
+final class ArrayObjectFilter implements TypeFilter
+{
+    /**
+     * @var DeepCopy
+     */
+    private $copier;
+
+    public function __construct(DeepCopy $copier)
+    {
+        $this->copier = $copier;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply($arrayObject)
+    {
+        $clone = clone $arrayObject;
+        foreach ($arrayObject->getArrayCopy() as $k => $v) {
+            $clone->offsetSet($k, $this->copier->copy($v));
+        }
+
+        return $clone;
+    }
+}
+
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/SplDoublyLinkedList.php b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/SplDoublyLinkedList.php
new file mode 100644
index 000000000..c5644cff8
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/SplDoublyLinkedList.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace DeepCopy\TypeFilter\Spl;
+
+/**
+ * @deprecated Use {@see SplDoublyLinkedListFilter} instead.
+ */
+class SplDoublyLinkedList extends SplDoublyLinkedListFilter
+{
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/SplDoublyLinkedListFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/SplDoublyLinkedListFilter.php
new file mode 100644
index 000000000..c33be4580
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/Spl/SplDoublyLinkedListFilter.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace DeepCopy\TypeFilter\Spl;
+
+use Closure;
+use DeepCopy\DeepCopy;
+use DeepCopy\TypeFilter\TypeFilter;
+use SplDoublyLinkedList;
+
+/**
+ * @final
+ */
+class SplDoublyLinkedListFilter implements TypeFilter
+{
+    private $copier;
+
+    public function __construct(DeepCopy $copier)
+    {
+        $this->copier = $copier;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply($element)
+    {
+        $newElement = clone $element;
+
+        $copy = $this->createCopyClosure();
+
+        return $copy($newElement);
+    }
+
+    private function createCopyClosure()
+    {
+        $copier = $this->copier;
+
+        $copy = function (SplDoublyLinkedList $list) use ($copier) {
+            // Replace each element in the list with a deep copy of itself
+            for ($i = 1; $i <= $list->count(); $i++) {
+                $copy = $copier->recursiveCopy($list->shift());
+
+                $list->push($copy);
+            }
+
+            return $list;
+        };
+
+        return Closure::bind($copy, null, DeepCopy::class);
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/TypeFilter.php b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/TypeFilter.php
new file mode 100644
index 000000000..5785a7da9
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/TypeFilter/TypeFilter.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace DeepCopy\TypeFilter;
+
+interface TypeFilter
+{
+    /**
+     * Applies the filter to the object.
+     *
+     * @param mixed $element
+     */
+    public function apply($element);
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/TypeMatcher/TypeMatcher.php b/vendor/myclabs/deep-copy/src/DeepCopy/TypeMatcher/TypeMatcher.php
new file mode 100644
index 000000000..a563cb294
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/TypeMatcher/TypeMatcher.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace DeepCopy\TypeMatcher;
+
+class TypeMatcher
+{
+    /**
+     * @var string
+     */
+    private $type;
+
+    /**
+     * @param string $type
+     */
+    public function __construct($type)
+    {
+        $this->type = $type;
+    }
+
+    /**
+     * @param mixed $element
+     *
+     * @return boolean
+     */
+    public function matches($element)
+    {
+        return is_object($element) ? is_a($element, $this->type) : gettype($element) === $this->type;
+    }
+}
diff --git a/vendor/myclabs/deep-copy/src/DeepCopy/deep_copy.php b/vendor/myclabs/deep-copy/src/DeepCopy/deep_copy.php
new file mode 100644
index 000000000..55dcc9261
--- /dev/null
+++ b/vendor/myclabs/deep-copy/src/DeepCopy/deep_copy.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace DeepCopy;
+
+use function function_exists;
+
+if (false === function_exists('DeepCopy\deep_copy')) {
+    /**
+     * Deep copies the given value.
+     *
+     * @param mixed $value
+     * @param bool  $useCloneMethod
+     *
+     * @return mixed
+     */
+    function deep_copy($value, $useCloneMethod = false)
+    {
+        return (new DeepCopy($useCloneMethod))->copy($value);
+    }
+}