Project Lombok bug 399 - @ExtensionMethod fails unless extensions class is in root package

compile_error.java

package com.github.cb372.lombok; // <-- Note: not the root package

import lombok.experimental.ExtensionMethod;

@ExtensionMethod({ Extensions.class })
public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, %s".format("World.")); // => "Hello, World."
    }
}

class Extensions {
    public static String format(String format, Object ... args) {
        return String.format(format, args);
    }
}

/*
 * javac:
 * 
 * error: cannot find symbol
 * symbol  : variable com.github.cb372.lombok.Extensions
 * location: class com.github.cb372.lombok.Main
 */

/*
 * Cause: http://code.google.com/p/projectlombok/issues/detail?id=399
 * Fix: https://github.com/rzwitserloot/lombok/commit/06826342f3be58cfb422f291f89e29be2cfde7f0
 */

ok.java

// <-- Note: root package

import lombok.experimental.ExtensionMethod;

@ExtensionMethod({ Extensions.class })
public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, %s".format("World.")); // => "Hello, World."
    }
}

class Extensions {
    public static String format(String format, Object ... args) {
        return String.format(format, args);
    }
}

/*
 * Compiles fine with javac.
 */