diff --git a/lib/Doctrine/ORM/Cache/CacheInstantiator.php b/lib/Doctrine/ORM/Cache/CacheInstantiator.php
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+++ b/lib/Doctrine/ORM/Cache/CacheInstantiator.php
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+<?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\Cache;
+
+use Doctrine\ORM\EntityManagerInterface;
+
+/**
+ * Contract for building second level cache instances.
+ *
+ * @since   2.5
+ * @author  Marco Pivetta <ocramius@gmail.com>
+ */
+interface CacheInstantiator
+{
+    /**
+     * Build timestamp cache region
+     *
+     * @param EntityManagerInterface $entityManager
+     *
+     * @return \Doctrine\ORM\Cache
+     */
+    public function getCache(EntityManagerInterface $entityManager);
+}