--- /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\Behat\Definition\Search;
+
+use Behat\Behat\Definition\DefinitionFinder;
+use Behat\Behat\Definition\SearchResult;
+use Behat\Gherkin\Node\FeatureNode;
+use Behat\Gherkin\Node\StepNode;
+use Behat\Testwork\Environment\Environment;
+
+/**
+ * Searches for a step definition in a specific environment.
+ *
+ * @see DefinitionFinder
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+interface SearchEngine
+{
+ /**
+ * Searches for a step definition.
+ *
+ * @param Environment $environment
+ * @param FeatureNode $feature
+ * @param StepNode $step
+ *
+ * @return null|SearchResult
+ */
+ public function searchDefinition(Environment $environment, FeatureNode $feature, StepNode $step);
+}