<?php
            $child    = $this->getRbac()->getChild($identityRole);
            $children = $child->getChildren();

            echo 'child',PHP_EOL;
            var_dump($child);
            echo 'children',PHP_EOL;
            var_dump($children);exit;

        //child
        //
        //object(SpiffySecurity\Rbac\Role)[269]
        //  protected 'name' => string 'administrator' (length=13)
        //  protected 'permissions' =>
        //    array
        //      empty
        //  protected 'index' => int 1
        //  protected 'children' =>
        //    array
        //        0 =>
        //        object(SpiffySecurity\Rbac\Role)[270]
        //          protected 'name' => string 'moderator' (length=9)
        //          protected 'permissions' =>
        //            array
        //              ...
        //          protected 'index' => int 1
        //          protected 'children' =>
        //            array
        //              ...
        //children
        //
        //array
        //  empty