src/Binary/Request/StandardBinaryRequest.php
public function request($url)
    {
        if (empty($url)) {
            return '';
        }

        $this->url = $url;
        $context = $this->getContext();
        $contents = file_get_contents($url, false, $context);
        $this->emit('complete');
        return $contents;
    }
public function request($url)
    {
        if (empty($url)) {
            return '';
        }

        $this->url = $url;
        $context = $this->getContext();
        $contents = file_get_contents($url, false, $context);
        $this->emit('complete');
        return $contents;
    }
{@inheritdoc}

@param $url
@return string