zf2 hydrator classMethods extract

<?php

class Weather {
    private $time;
    private $rain;

    function setTime(\DateTime $time) {
        $this->time = $time;
    }

    function getTime() {
        return $this->time;
        }

    function setRain(Rain $rain) {
        $this->rain = $rain;
    }

    function getRain() {
        return $rain;
    }
}


class Rain {
    private $description;
    function setDescription($description) {
        $this->description = $description;
    }

    function getDescription() {
        return $this->desc;
    }
}


/**
Should return:
 object (Weather)
    time
        - timestamp = "2601024202422"
    rain
        - description = string "Testing"

Instead it returns:
 object (Weather)
    time
        - timestamp = "2601024202422"
    rain {}
*/