@Delegate does not work with generated stubs

class SomeGroovyClass {
    @Delegate
    SomeDelegate delegate

    SomeGroovyClass(SomeDelegate delegate) {
        this.delegate = delegate
    }
}

class SomeDelegate {

    String value

    SomeDelegate(String value) {
        this.value = value
    }
}

public class Client {
    public static void main(String[] args) {
        SomeDelegate delegate = new SomeDelegate("val1");
        System.out.println(delegate.getValue());

        SomeGroovyClass groovyClass = new SomeGroovyClass(delegate);
        System.out.println(groovyClass.getValue());

    }
}

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project delegateTest: Compilation failure
[ERROR] C:\dev\projects\delegateTest\src\main\java\Client.java:[24,38] error: cannot find symbol

import java.lang.*;
import java.io.*;
import java.net.*;
import java.util.*;
import groovy.lang.*;
import groovy.util.*;

public class SomeGroovyClass
  extends java.lang.Object  implements
    groovy.lang.GroovyObject {
public SomeGroovyClass
(SomeDelegate delegate) {}
public  groovy.lang.MetaClass getMetaClass() { return (groovy.lang.MetaClass)null;}
public  void setMetaClass(groovy.lang.MetaClass mc) { }
public  java.lang.Object invokeMethod(java.lang.String method, java.lang.Object arguments) { return null;}
public  java.lang.Object getProperty(java.lang.String property) { return null;}
public  void setProperty(java.lang.String property, java.lang.Object value) { }
public  SomeDelegate getDelegate() { return (SomeDelegate)null;}
public  void setDelegate(SomeDelegate value) { }
}