Index: applications/editors/josm/plugins/apache-commons/build.xml
===================================================================
--- applications/editors/josm/plugins/apache-commons/build.xml	(revision 35339)
+++ applications/editors/josm/plugins/apache-commons/build.xml	(revision 35340)
@@ -49,3 +49,7 @@
     </target>
 
+	<target name="pre-javadoc">
+        <delete><fileset dir="src" includes="**/org/apache/commons/collections4/bloomfilter/hasher/function/Murmur*.java"/></delete>
+    </target>
+
 </project>
Index: applications/editors/josm/plugins/build-common.xml
===================================================================
--- applications/editors/josm/plugins/build-common.xml	(revision 35339)
+++ applications/editors/josm/plugins/build-common.xml	(revision 35340)
@@ -278,5 +278,8 @@
         </condition>
     </target>
-    <target name="javadoc" unless="skip-javadoc">
+    <target name="pre-javadoc">
+        <!-- to be overidden by plugins that need to perform additional tasks before generating javadoc -->
+    </target>
+    <target name="javadoc" depends="pre-javadoc" unless="skip-javadoc">
         <javadoc destdir="${plugin.doc.dir}"
                 executable="${javadoc.executable}"