WhichBrowser\Analyser\Derive::deriveOperaRenderingEngine PHP Method

    private function deriveOperaRenderingEngine()
    {
        if ($this->data->isBrowser('Opera') || $this->data->isBrowser('Opera Mobile')) {
            $version = $this->data->browser->getVersion();
            if ($version >= 3.5 && $version < 7 && !$this->data->isEngine('Electra')) {
                $this->data->engine->reset(['name' => 'Electra']);
            }
            if ($version >= 7 && $version < 13 && !$this->data->isEngine('Presto')) {
                $this->data->engine->reset(['name' => 'Presto']);
            }
        }
        if ($this->data->isBrowser('Opera Mini') && !$this->data->isOs('iOS') && !$this->data->isEngine('Presto')) {
            $this->data->engine->reset(['name' => 'Presto']);
        }
    }