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diff --git a/vendor/setasign/fpdi/src/PdfReader/PageBoundaries.php b/vendor/setasign/fpdi/src/PdfReader/PageBoundaries.php
new file mode 100644
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+++ b/vendor/setasign/fpdi/src/PdfReader/PageBoundaries.php
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+<?php
+
+/**
+ * This file is part of FPDI
+ *
+ * @package   setasign\Fpdi
+ * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @license   http://opensource.org/licenses/mit-license The MIT License
+ */
+
+namespace setasign\Fpdi\PdfReader;
+
+/**
+ * An abstract class for page boundary constants and some helper methods
+ */
+abstract class PageBoundaries
+{
+    /**
+     * MediaBox
+     *
+     * The media box defines the boundaries of the physical medium on which the page is to be printed.
+     *
+     * @see PDF 32000-1:2008 - 14.11.2 Page Boundaries
+     * @var string
+     */
+    const MEDIA_BOX = 'MediaBox';
+
+    /**
+     * CropBox
+     *
+     * The crop box defines the region to which the contents of the page shall be clipped (cropped) when displayed or
+     * printed.
+     *
+     * @see PDF 32000-1:2008 - 14.11.2 Page Boundaries
+     * @var string
+     */
+    const CROP_BOX = 'CropBox';
+
+    /**
+     * BleedBox
+     *
+     * The bleed box defines the region to which the contents of the page shall be clipped when output in a
+     * production environment.
+     *
+     * @see PDF 32000-1:2008 - 14.11.2 Page Boundaries
+     * @var string
+     */
+    const BLEED_BOX = 'BleedBox';
+
+    /**
+     * TrimBox
+     *
+     * The trim box defines the intended dimensions of the finished page after trimming.
+     *
+     * @see PDF 32000-1:2008 - 14.11.2 Page Boundaries
+     * @var string
+     */
+    const TRIM_BOX = 'TrimBox';
+
+    /**
+     * ArtBox
+     *
+     * The art box defines the extent of the page’s meaningful content (including potential white space) as intended
+     * by the page’s creator.
+     *
+     * @see PDF 32000-1:2008 - 14.11.2 Page Boundaries
+     * @var string
+     */
+    const ART_BOX = 'ArtBox';
+
+    /**
+     * All page boundaries
+     *
+     * @var array
+     */
+    public static $all = array(
+        self::MEDIA_BOX,
+        self::CROP_BOX,
+        self::BLEED_BOX,
+        self::TRIM_BOX,
+        self::ART_BOX
+    );
+
+    /**
+     * Checks if a name is a valid page boundary name.
+     *
+     * @param string $name The boundary name
+     * @return boolean A boolean value whether the name is valid or not.
+     */
+    public static function isValidName($name)
+    {
+        return \in_array($name, self::$all, true);
+    }
+}