/**
* @param array $configuration
*/
public function configure(array $configuration)
{
parent::configure($configuration);
$this->ratio = isset($configuration['ratio']) ? floatval($configuration['ratio']) : 0.0;
$this->vary = isset($configuration['vary']) ? $configuration['vary'] : null;
$this->varyValue = (string) mt_rand(0, self::RESOLUTION);
// default: if never supplied a context, unseeded ratio
}
