Get @return from Annotation

I have this class

<?php
namespace Lorem\Ipsum\Do\Sor
use \Some\NameSpace\OfClass\SimpleClass;


class SimpleSecondClass {

    /**
    *
    * @return SimpleClass
    */
    public function someMethod(){
        return new SimpleClass();
    }

}

And i want get @return annotation from someMethod method with full namespace ( \Some\NameSpace\OfClass\SimpleClass ), without reading file cointains this class. How can i do it?