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typo3/sysext/extbase/Classes/DomainObject/AbstractValueObject.php

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+<?php
+namespace TYPO3\CMS\Extbase\DomainObject;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * An abstract Value Object. A Value Object is an object that describes some characteristic
+ * or attribute (e.g. a color) but carries no concept of identity.
+ * @internal only to be used within Extbase, not part of TYPO3 Core API.
+ */
+abstract class AbstractValueObject extends \TYPO3\CMS\Extbase\DomainObject\AbstractDomainObject
+{
+    /**
+     * Returns the value of the Value Object. Must be overwritten by a concrete value object.
+     *
+     * @return string
+     */
+    public function getValue()
+    {
+        return $this->__toString();
+    }
+}