sunnysideup / silverstripe-dataobject-generator

        if (!isset($this->_classesCache[$rootClass])) {

            $list = \ClassInfo::subclassesFor($rootClass);

            $newList = [];

            foreach ($list as $class) {

                if (

                    $class == $rootClass ||

                    is_subclass_of($class, 'TestOnly') ||

                    in_array($class, $this->Config()->get('excluded_data_objects'))

                ) {

                    //do nothing

                } else {

                    $newList[$class] = $class;

                    $name = \Injector::inst()->get($class)->singular_name();

                    if ($name !== $class) {

                        $newList[$class] .= ' ('.$name.')';

                    }

                }

            }

            $this->_classesCache[$rootClass] = $newList;

        }

    public function SiteTreeList($rootClass = 'SiteTree')

    {

        $list = \ClassInfo::subclassesFor($rootClass);

        foreach ($list as $class) {

            if (

                $class == $rootClass ||

                is_subclass_of($class, 'TestOnly') ||

                in_array($class, $this->Config()->get('excluded_data_objects'))

            ) {

                //do nothing

            } else {

                $newList[$class] = $class;

                $name = \Injector::inst()->get($class)->singular_name();

                if ($name !== $class) {

                    $newList[$class] .= ' ('.$name.')';

                }

            }

        }

        return $newList;

    }