public function setComplexTypeStrategy($strategy)
    {
        if ($strategy === true) {
            require_once "Zend/Soap/Wsdl/Strategy/DefaultComplexType.php";
            $strategy = new Zend_Soap_Wsdl_Strategy_DefaultComplexType();
        } elseif ($strategy === false) {
            require_once "Zend/Soap/Wsdl/Strategy/AnyType.php";
            $strategy = new Zend_Soap_Wsdl_Strategy_AnyType();
        } elseif (is_string($strategy)) {
            if (class_exists($strategy)) {
                $strategy = new $strategy();
            } else {
                require_once "Zend/Soap/Wsdl/Exception.php";
                throw new Zend_Soap_Wsdl_Exception(
                    sprintf("Strategy with name '%s does not exist.", $strategy
                ));
            }
        }

        if (!($strategy instanceof Zend_Soap_Wsdl_Strategy_Interface)) {
            require_once "Zend/Soap/Wsdl/Exception.php";
            throw new Zend_Soap_Wsdl_Exception("Set a strategy that is not of type 'Zend_Soap_Wsdl_Strategy_Interface'");
        }
        $this->_strategy = $strategy;
        return $this;
    }