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diff --git a/src/io/appium/droiddriver/finders/Finder.java b/src/io/appium/droiddriver/finders/Finder.java
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+/*
+ * Copyright (C) 2013 DroidDriver committers
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.appium.droiddriver.finders;
+
+import io.appium.droiddriver.UiElement;
+import io.appium.droiddriver.exceptions.ElementNotFoundException;
+
+/**
+ * Interface for finding UiElement.
+ */
+public interface Finder {
+  /**
+   * Returns the matching UiElement. The implementing finder should not poll.
+   * <p>
+   * Invisible UiElements are skipped.
+   *
+   * @param context The starting UiElement, used as search context
+   * @return The first matching element on the current context
+   * @throws ElementNotFoundException If no matching elements are found
+   */
+  UiElement find(UiElement context);
+
+  /**
+   * {@inheritDoc}
+   *
+   * <p>
+   * It is recommended that this method return the description of the finder,
+   * for example, "{text=OK}".
+   */
+  @Override
+  String toString();
+}