gistfile1.php

<?php

		$configuration = new \ProxyManager\Configuration();
		$configuration->setProxiesTargetDir($this->phpbb_root_path . '/cache');
		spl_autoload_register($configuration->getProxyAutoloader());
		$factory = new \ProxyManager\Factory\LazyLoadingValueHolderFactory($configuration);

		$twig = $this->twig;
		$lexer = $factory->createProxy(
			'phpbb\template\twig\lexer',
			function (& $wrappedObject, $proxy, $method, $parameters, & $initializer) use ($twig) {
				$wrappedObject = new \phpbb\template\twig\lexer($twig); // instantiation logic here
				$initializer   = null; // turning off further lazy initialization

				return true;
			}
		);

		$this->twig->setLexer($lexer);