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diff --git a/vendor/doctrine/orm/lib/Doctrine/ORM/Query/Printer.php b/vendor/doctrine/orm/lib/Doctrine/ORM/Query/Printer.php
new file mode 100644
index 0000000..83640c5
--- /dev/null
+++ b/vendor/doctrine/orm/lib/Doctrine/ORM/Query/Printer.php
@@ -0,0 +1,92 @@
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\ORM\Query;
+
+/**
+ * A parse tree printer for Doctrine Query Language parser.
+ *
+ * @author      Janne Vanhala <jpvanhal@cc.hut.fi>
+ * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @link        http://www.phpdoctrine.org
+ * @since       2.0
+ */
+class Printer
+{
+    /**
+     * Current indentation level
+     *
+     * @var int
+     */
+    protected $_indent = 0;
+
+    /**
+     * Defines whether parse tree is printed (default, false) or not (true).
+     *
+     * @var bool
+     */
+    protected $_silent;
+
+    /**
+     * Constructs a new parse tree printer.
+     *
+     * @param bool $silent Parse tree will not be printed if true.
+     */
+    public function __construct($silent = false)
+    {
+        $this->_silent = $silent;
+    }
+
+    /**
+     * Prints an opening parenthesis followed by production name and increases
+     * indentation level by one.
+     *
+     * This method is called before executing a production.
+     *
+     * @param string $name production name
+     */
+    public function startProduction($name)
+    {
+        $this->println('(' . $name);
+        $this->_indent++;
+    }
+
+    /**
+     * Decreases indentation level by one and prints a closing parenthesis.
+     *
+     * This method is called after executing a production.
+     */
+    public function endProduction()
+    {
+        $this->_indent--;
+        $this->println(')');
+    }
+
+    /**
+     * Prints text indented with spaces depending on current indentation level.
+     *
+     * @param string $str text
+     */
+    public function println($str)
+    {
+        if ( ! $this->_silent) {
+            echo str_repeat('    ', $this->_indent), $str, "\n";
+        }
+    }
+}