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diff --git a/vendor/mikey179/vfsStream/src/main/php/org/bovigo/vfs/visitor/vfsStreamAbstractVisitor.php b/vendor/mikey179/vfsStream/src/main/php/org/bovigo/vfs/visitor/vfsStreamAbstractVisitor.php
new file mode 100644
index 000000000..f9e597b91
--- /dev/null
+++ b/vendor/mikey179/vfsStream/src/main/php/org/bovigo/vfs/visitor/vfsStreamAbstractVisitor.php
@@ -0,0 +1,64 @@
+<?php
+/**
+ * This file is part of vfsStream.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @package  org\bovigo\vfs
+ */
+namespace org\bovigo\vfs\visitor;
+use org\bovigo\vfs\vfsStreamContent;
+use org\bovigo\vfs\vfsStreamBlock;
+
+/**
+ * Abstract base class providing an implementation for the visit() method.
+ *
+ * @since  0.10.0
+ * @see    https://github.com/mikey179/vfsStream/issues/10
+ */
+abstract class vfsStreamAbstractVisitor implements vfsStreamVisitor
+{
+    /**
+     * visit a content and process it
+     *
+     * @param   vfsStreamContent  $content
+     * @return  vfsStreamVisitor
+     * @throws  \InvalidArgumentException
+     */
+    public function visit(vfsStreamContent $content)
+    {
+        switch ($content->getType()) {
+            case vfsStreamContent::TYPE_BLOCK:
+                $this->visitBlockDevice($content);
+                break;
+
+            case vfsStreamContent::TYPE_FILE:
+                $this->visitFile($content);
+                break;
+
+            case vfsStreamContent::TYPE_DIR:
+                if (!$content->isDot()) {
+                    $this->visitDirectory($content);
+                }
+
+                break;
+
+            default:
+                throw new \InvalidArgumentException('Unknown content type ' . $content->getType() . ' for ' . $content->getName());
+        }
+
+        return $this;
+    }
+
+    /**
+     * visit a block device and process it
+     *
+     * @param   vfsStreamBlock $block
+     * @return  vfsStreamVisitor
+     */
+    public function visitBlockDevice(vfsStreamBlock $block)
+    {
+        return $this->visitFile($block);
+    }
+}