Issue #3186626 by klausi, longwave: Second parameter of ProxyBuilder::build()...

   *

   * @param string $class_name

   *   The class name of the actual service.

   * @param string $proxy_class_name

   *   (optional) The class name of the proxy service.

   *

   * @return string

   *   The full string with namespace class and methods.

   */

  public function build($class_name, $proxy_class_name = '') {

  public function build($class_name) {

    $reflection = new \ReflectionClass($class_name);

    if ($proxy_class_name) {

      $proxy_class_reflection = new \ReflectionClass($proxy_class_name);

      $proxy_namespace = $proxy_class_reflection->getNamespaceName();

    }

    else {

    $proxy_class_name = $this->buildProxyClassName($class_name);

    $proxy_namespace = $this->buildProxyNamespace($class_name);

    $proxy_class_shortname = str_replace($proxy_namespace . '\\', '', $proxy_class_name);

    }

    $output = '';

    $class_documentation = <<<'EOS'