protected function getLocatorByServiceId($id) {
		if (isset($this->_locatorsResolved[$id])) {
			return $this->_locatorsResolved[$id];
		}
		
		foreach ($this->_locators as $locator) {
			if ($locator->has($id)) {
				$this->_locatorsResolved[$id] = $locator;
				return $locator;
			}
		}
	}