Eris\Generator\BindGenerator::contains PHP Method

    public function contains(GeneratedValue $element)
    {
        list($outerGeneratorValue, $innerGeneratorValue) = $element->input();
        $outerGenerator = call_user_func($this->outerGeneratorFactory, $innerGeneratorValue->unbox());
        return $outerGenerator->contains($outerGeneratorValue);
    }