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diff --git a/org.aspectj.matcher/src/org/aspectj/weaver/CustomMungerFactory.java b/org.aspectj.matcher/src/org/aspectj/weaver/CustomMungerFactory.java
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+/* *******************************************************************
+ * Copyright (c) 2007 Contributors
+ * All rights reserved. 
+ * This program and the accompanying materials are made available 
+ * under the terms of the Eclipse Public License v1.0 
+ * which accompanies this distribution and is available at 
+ * http://www.eclipse.org/legal/epl-v10.html 
+ *  
+ * Contributors: 
+ *     Linton Ye https://bugs.eclipse.org/bugs/show_bug.cgi?id=193065
+ * ******************************************************************/
+
+package org.aspectj.weaver;
+
+import java.util.Collection;
+
+/**
+ * <p>
+ * This interface is introduced to support tools like PointcutDoctor.
+ * </p>
+ * <p>
+ * A CustomMungerFactory is used to create ShadowMungers and/or
+ * ConcreteTypeMungers so that an extender can extract extra information during
+ * the weaving process.
+ * </p>
+ * <p>
+ * A CustomMungerFactory is assigned to a weaver through its AjCompiler in
+ * extenders' code, and gets invoked by the weaver right before the weaving
+ * starts. The custom shadow/type mungers being created will be added into the
+ * shadow/type munger list in the weaver and participate the weaving process.
+ * For example, the match method of each custom shadow munger will be called
+ * against each shadow.
+ * </p>
+ * @author lintonye
+ * 
+ */
+public interface CustomMungerFactory {
+
+	/**
+	 * @param aspectType
+	 * @return a Collection&lt;ShadowMunger&gt; of custom shadow mungers for the
+	 *         given aspect
+	 */
+	public Collection/* ShadowMunger */createCustomShadowMungers(
+			ResolvedType aspectType);
+
+	/**
+	 * @param aspectType
+	 * @return a Collection&lt;ConcreteTypeMunger&gt; of custom type mungers for the
+	 *         given aspect
+	 */
+	public Collection/* ConcreteTypeMunger */createCustomTypeMungers(
+			ResolvedType aspectType);
+	
+	public Collection/* ShadowMunger */getAllCreatedCustomShadowMungers();
+
+	public Collection/* ConcreteTypeMunger */getAllCreatedCustomTypeMungers();
+}