class GroovyClassWithInnerTypes implements GroovyInterface {
    /**
     * This is an inner enum.
     */
    enum InnerEnum {}

    /**
     * This is an inner class.
     */
    static class InnerClass {
        InnerEnum enumProp

        /**
         * This is an inner inner class.
         */
        class AnotherInner {
            InnerClass outer
        }
    }