--- /dev/null
+<?php
+
+/*
+ * This file is part of the Behat.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Testwork\Output\ServiceContainer\Formatter;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * Provides a way to easily define custom formatters.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+interface FormatterFactory
+{
+ /**
+ * Builds formatter configuration.
+ *
+ * @param ContainerBuilder $container
+ */
+ public function buildFormatter(ContainerBuilder $container);
+
+ /**
+ * Processes formatter configuration.
+ *
+ * @param ContainerBuilder $container
+ */
+ public function processFormatter(ContainerBuilder $container);
+}