Symfony\Component\Workflow\Dumper\GraphvizDumper::addEdges PHP Method

    protected function addEdges(array $edges)
    {
        $code = '';
        foreach ($edges as $edge) {
            $code .= sprintf("  %s_%s -> %s_%s [style=\"solid\"];\n", 'from' === $edge['direction'] ? 'place' : 'transition', $this->dotize($edge['from']), 'from' === $edge['direction'] ? 'transition' : 'place', $this->dotize($edge['to']));
        }
        return $code;
    }