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diff --git a/src/org/easymock/IAnswer.java b/src/org/easymock/IAnswer.java
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+/*
+ * Copyright 2001-2009 OFFIS, Tammo Freese
+ * 
+ * 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 org.easymock;
+
+/**
+ * Used to answer expected calls.
+ * @param <T> the type to return.
+ */
+public interface IAnswer<T> {
+    /**
+     * is called by EasyMock to answer an expected call. 
+     * The answer may be to return a value, or to throw an exception.
+     * The arguments of the call for which the answer is generated 
+     * are available via {@link EasyMock#getCurrentArguments()} - be careful
+     * here, using the arguments is not refactoring-safe.
+     * 
+     * @return the value to be returned
+     * @throws Throwable the throwable to be thrown
+     */
+    T answer() throws Throwable;
+}