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diff --git a/vendor/doctrine/collections/docs/en/derived-collections.rst b/vendor/doctrine/collections/docs/en/derived-collections.rst
deleted file mode 100644
index 03d9da5..0000000
--- a/vendor/doctrine/collections/docs/en/derived-collections.rst
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@@ -1,26 +0,0 @@
-Derived Collections
-===================
-
-You can create custom collection classes by extending the
-``Doctrine\Common\Collections\ArrayCollection`` class. If the
-``__construct`` semantics are different from the default ``ArrayCollection``
-you can override the ``createFrom`` method:
-
-.. code-block:: php
-    final class DerivedArrayCollection extends ArrayCollection
-    {
-        /** @var \stdClass */
-        private $foo;
-
-        public function __construct(\stdClass $foo, array $elements = [])
-        {
-            $this->foo = $foo;
-
-            parent::__construct($elements);
-        }
-
-        protected function createFrom(array $elements) : self
-        {
-            return new static($this->foo, $elements);
-        }
-    }