ClosureDelegateTest.groovy: package org.mccrindle.groovy.spring; class ClosureDelegateTest extends GroovyTestCase { void testClosureDelegate() { cdb = new ClosureDelegateBuilder(); try { cdb.one() { two(map: [ "key": three(key: "value", anotherkey: "anothervalue") { four() }]) } } catch(MissingMethodException e) { assertEquals("four", e.method); } } } ClosureDelegateBuilder.java: /*  * Created on Mar 13, 2004  */ package org.mccrindle.groovy.spring; import java.util.Map; import groovy.lang.Closure; /**  * @author jamie  */ public class ClosureDelegateBuilder {     public void one(Closure closure) {         closure.setDelegate(this);         closure.call();     }         public void two(Map map) {}         public void three(Map map, Closure closure) {         closure.setDelegate(this);         closure.call();     }  } } results in the following MissingMethodException: groovy.lang.MissingMethodException: No such method: three for class: org.mccrindle.groovy.spring.ClosureDelegateTest$1 with arguments: [[key:value, anotherkey:anothervalue], org.mccrindle.groovy.spring.ClosureDelegateTest$2@353154]         at groovy.lang.MetaClass.invokeMethod(MetaClass.java:271) whereas it should say that four() is the missing method...