Doctrine\Common\Proxy\ProxyGenerator::generateConstructorImpl PHP Метод

    private function generateConstructorImpl(ClassMetadata $class)
    {
        $constructorImpl = <<<'EOT'
    /**
     * @param \Closure $initializer
     * @param \Closure $cloner
     */
    public function __construct($initializer = null, $cloner = null)
    {

EOT;
        $toUnset = [];
        foreach ($this->getLazyLoadedPublicProperties($class) as $lazyPublicProperty => $unused) {
            $toUnset[] = '$this->' . $lazyPublicProperty;
        }
        $constructorImpl .= (empty($toUnset) ? '' : '        unset(' . implode(', ', $toUnset) . ");\n") . <<<'EOT'

        $this->__initializer__ = $initializer;
        $this->__cloner__      = $cloner;
    }
EOT;
        return $constructorImpl;
    }