Opis\Closure\SerializableClosure::mapByReference PHP Method

    protected function &mapByReference(&$value)
    {
        if ($value instanceof Closure) {
            if (isset($this->scope->storage[$value])) {
                if (static::supportBinding()) {
                    $ret = $this->scope->storage[$value];
                } else {
                    $ret = $this->scope->storage[$value]->reference;
                }
                return $ret;
            }
            $instance = new static($value, $this->serializeThis);
            if (static::$context !== null) {
                static::$context->scope->toserialize--;
            } else {
                $instance->scope = $this->scope;
            }
            $this->scope->storage[$value] = $instance;
            return $instance;
        } elseif (is_array($value)) {
            $ret = array_map(array($this, __FUNCTION__), $value);
            return $ret;
        } elseif ($value instanceof \stdClass) {
            $ret = (array) $value;
            $ret = array_map(array($this, __FUNCTION__), $ret);
            $ret = (object) $ret;
            return $ret;
        }
        return $value;
    }