public function show($padding = 0)
    {
        echo str_repeat('    ', $padding), $this->branch->getUniqueId(), ':' , $this->increase;
        if (\count($this->branches)) {
            echo ':', PHP_EOL;
            foreach ($this->branches as $node) {
                $node->show($padding + 1);
            }
        } else {
            echo PHP_EOL;
        }
    }